diff --git a/Extensions/ChatRoleExtensions.cs b/Extensions/ChatRoleExtensions.cs
new file mode 100644
index 0000000..b83bb8f
--- /dev/null
+++ b/Extensions/ChatRoleExtensions.cs
@@ -0,0 +1,162 @@
+using Microsoft.Extensions.AI;
+using xAiModels.Constants;
+using xCommons.Extensions;
+
+namespace xAiModels.Extensions
+{
+    /// <summary>
+    /// Extensions for ChatRole ...
+    /// </summary>
+    public static class ChatRoleExtensions
+    {
+        /// <summary>
+        /// Normalize an String to Propper Chat Role Value ...
+        /// <see cref="XAiChatRoles"/>>
+        /// </summary>
+        /// <param name="source"></param>
+        /// <returns></returns>
+        public static string GetChatRoleTitle(this string source)
+        {
+            //
+            var result = XAiChatRoles.None;
+
+            //
+            if (source.ToNormalString() == XAiChatRoles.None.ToNormalString())
+            {
+                result = XAiChatRoles.None;
+            }
+            else if (source.ToNormalString() == XAiChatRoles.User.ToNormalString())
+            {
+                result = XAiChatRoles.User;
+            }
+            else if (source.ToNormalString() == XAiChatRoles.Tool.ToNormalString())
+            {
+                result = XAiChatRoles.Tool;
+            }
+            else if (source.ToNormalString() == XAiChatRoles.System.ToNormalString())
+            {
+                result = XAiChatRoles.System;
+            }
+            else if (source.ToNormalString() == XAiChatRoles.Assistant.ToNormalString())
+            {
+                result = XAiChatRoles.Assistant;
+            }
+
+            //
+            return result;
+        }
+
+        /// <summary>
+        /// Get Chat Role Title from Chat Role Class ...
+        /// <see cref="XAiChatRoles"/>
+        /// </summary>
+        /// <param name="source"></param>
+        /// <returns></returns>
+        public static string GetRole(this ChatRole source)
+        {
+            //
+            var result = source.Value
+                .GetChatRoleTitle();
+
+            //
+            return result;
+        }
+
+        /// <summary>
+        /// Generate Chat Role Class Based on role Title ...
+        /// </summary>
+        /// <param name="source"></param>
+        /// <returns></returns>
+        public static ChatRole ToChatRole(this string source)
+        {
+            //
+            var role = source.GetChatRoleTitle();
+            ChatRole result = new ChatRole(role);
+
+            //
+            return result;
+        }
+
+        /// <summary>
+        /// Extract Chat Role Enum from Chat Role ...
+        /// <see cref="ChatRole"/>
+        /// <see cref="XAiChatRole"/>
+        /// </summary>
+        /// <param name="source"></param>
+        /// <returns></returns>
+        public static XAiChatRole ToChatRole(this ChatRole source)
+        {
+            //
+            var role = source
+                .GetRole()
+                .GetChatRoleTitle();
+
+            //
+            XAiChatRole result = XAiChatRole.User;
+
+            //
+            if (role == XAiChatRoles.User)
+            {
+                result = XAiChatRole.User;
+            }
+            else if (role == XAiChatRoles.Tool)
+            {
+                result = XAiChatRole.Tool;
+            }
+            else if (role == XAiChatRoles.System)
+            {
+                result = XAiChatRole.System;
+            }
+            else if (role == XAiChatRoles.Assistant)
+            {
+                result = XAiChatRole.Assistant;
+            }
+
+            //
+            return result;
+        }
+
+        /// <summary>
+        /// Validate an String as Chat Role ...
+        /// </summary>
+        /// <param name="source"></param>
+        /// <returns></returns>
+        public static bool IsValid(this string source)
+        {
+            //
+            var result =
+                source != XAiChatRoles.None &&
+                source.ToNormalString() != XAiChatRoles.None.ToNormalString();
+
+            //
+            return result;
+        }
+
+        /// <summary>
+        /// Validate Role ...
+        /// <see cref="XAiChatRole"/>>
+        /// </summary>
+        /// <param name="source"></param>
+        /// <returns></returns>
+        public static bool IsValid(this XAiChatRole source)
+        {
+            //
+            var result = source != XAiChatRole.None;
+            return result;
+        }
+
+        /// <summary>
+        /// Validate Role ...
+        /// <see cref="ChatRole"/>>
+        /// </summary>
+        /// <param name="source"></param>
+        /// <returns></returns>
+        public static bool IsValid(this ChatRole source)
+        {
+            //
+            var role = source.ToChatRole();
+            var result = role.IsValid();
+            return result;
+        }
+    }
+}
\ No newline at end of file
diff --git a/Models/XAiConversationDto.cs b/Models/XAiConversationDto.cs
index 48286b6..9b0bd62 100644
--- a/Models/XAiConversationDto.cs
+++ b/Models/XAiConversationDto.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using xModels.Base;
+using xModels.Dtos;
 
 namespace xAiModels.Models
 {
@@ -34,6 +35,13 @@ namespace xAiModels.Models
         /// </summary>
         public IEnumerable<XAiMessageDto> Messages { get; set; }
 
+        /// <summary>
+        /// User Identifier ...
+        /// </summary>
+        /// <value></value>
+        public string OwnerId { get; set; }
+        public XPersonDto Owner { get; set; }
+
         /// <summary>
         /// Project ID ...
         /// </summary>
diff --git a/Models/XAiMessageDto.cs b/Models/XAiMessageDto.cs
index 2101a25..d4eb29a 100644
--- a/Models/XAiMessageDto.cs
+++ b/Models/XAiMessageDto.cs
@@ -1,9 +1,7 @@
 using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
 using xAiModels.Constants;
 using xModels.Base;
+using xModels.Dtos;
 
 namespace xAiModels.Models
 {
@@ -37,6 +35,13 @@ namespace xAiModels.Models
         /// </summary>
         public DateTime UpdatedAt { get; set; }
 
+        /// <summary>
+        /// User Identifier ...
+        /// </summary>
+        /// <value></value>
+        public string OwnerId { get; set; }
+        public XPersonDto Owner { get; set; }
+
         /// <summary>
         /// Conversation Id ...
         /// </summary>
@@ -46,6 +51,5 @@ namespace xAiModels.Models
         /// Conversation ...
         /// </summary>
         public XAiConversationDto Conversation { get; set; }
-        
     }
 }
\ No newline at end of file
diff --git a/Models/XAiMessageUpdateDto.cs b/Models/XAiMessageUpdateDto.cs
new file mode 100644
index 0000000..cbed543
--- /dev/null
+++ b/Models/XAiMessageUpdateDto.cs
@@ -0,0 +1,45 @@
+using System;
+using xAiModels.Constants;
+using xModels.Base;
+
+namespace xAiModels.Models
+{
+    public class XAiMessageUpdateDto : XBaseDto
+    {
+        /// <summary>
+        /// Message Sequence ...
+        /// </summary>
+        public long Cequense { get; set; }
+
+        /// <summary>
+        /// Id of Message ...
+        /// </summary>
+        public Guid Id { get; set; }
+
+        /// <summary>
+        /// Message of Chat ...
+        /// </summary>
+        public string Content { get; set; }
+
+        /// <summary>
+        /// Role of Message ...
+        /// </summary>
+        public XAiChatRole Role { get; set; }
+
+        /// <summary>
+        /// Updated Time ...
+        /// </summary>
+        public DateTime UpdatedAt { get; set; }
+
+        /// <summary>
+        /// User Identifier ...
+        /// </summary>
+        /// <value></value>
+        public string OwnerId { get; set; }
+
+        /// <summary>
+        /// Conversation Id ...
+        /// </summary>
+        public Guid ConversationId { get; set; }
+    }
+}
\ No newline at end of file
diff --git a/Models/XAiProjectDto.cs b/Models/XAiProjectDto.cs
index a134ead..56cf706 100644
--- a/Models/XAiProjectDto.cs
+++ b/Models/XAiProjectDto.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using xModels.Base;
+using xModels.Dtos;
 
 namespace xAiModels.Models
 {
@@ -39,6 +40,13 @@ namespace xAiModels.Models
         /// </summary>
         public DateTime UpdatedAt { get; set; }
 
+        /// <summary>
+        /// User Identifier ...
+        /// </summary>
+        /// <value></value>
+        public string OwnerId { get; set; }
+        public XPersonDto Owner { get; set; }
+
         /// <summary>
         /// Conversations ...
         /// </summary>
diff --git a/xAiModels.csproj b/xAiModels.csproj
index a9040c7..74221ca 100644
--- a/xAiModels.csproj
+++ b/xAiModels.csproj
@@ -23,6 +23,7 @@
     <!-- Local Modules -->
     <ItemGroup>
         <PackageReference Include="xDashboard.xModels" Version="1.0.0" />
+        <PackageReference Include="Microsoft.Extensions.AI" Version="10.4.1" />
         <!-- <PackageReference Include="xDashboard.xCommons" Version="1.0.0" /> -->
     </ItemGroup>