update on SemanticKernel reference

Author: Vallarasu4653

ChartGeneratorAISample/ChartGenerator/AIService/ChartsAIService.cs

@@ -115,7 +115,7 @@ internal async Task<string> GetAnswerFromGPT(string userPrompt)
         {
             try
             {
-                if (IsCredentialValid && ChatHistory != null && Client != null)
+                if (IsCredentialValid && Client != null)
                 {
                     ChatHistory = string.Empty;
                     // Add the system message and user message to the options

ChartGeneratorAISample/ChartGenerator/ViewModel/ChartViewModel.cs

@@ -21,7 +21,7 @@ public class ChartViewModel : INotifyPropertyChanged
         private bool isLoading;
         private ObservableCollection<IAssistItem> messages = new();
 
-        private ChartAIService semanticKernalService = new();
+        private ChartAIService openAIService = new();
 
         public string? EntryText
         {
@@ -269,7 +269,7 @@ public async Task<string> ProcessUserRequest(string request)
                             + "- Only plain text should be used; no need to specify 'json' above the data."
                             + "- No additional content other than json data should be included!";
 
-            var response = await semanticKernalService.GetAnswerFromGPT(prompt);
+            var response = await openAIService.GetAnswerFromGPT(prompt);
 
             return response.ToString();
         }
@@ -344,7 +344,7 @@ public async Task<string> GetAIResponse(string query)
                 + "- No additional content other than json data should be included!";
 
             // Call the method to get the AI response
-            var response = await semanticKernalService.GetAnswerFromGPT(prompt);
+            var response = await openAIService.GetAnswerFromGPT(prompt);
 
             // Convert the response to a string (assuming the response has a ToString method)
             return response.ToString();