Update app.py

app.py

@@ -19,7 +19,9 @@ def chat(user_input, history=None):
         history = []
 
     if user_input.lower() == "exit":
-        return history + [{"role": "assistant", "content": "Ending session. Goodbye!"}]
+        # Append exit message in tuple format
+        history.append(["assistant", "Ending session. Goodbye!"])
+        return history
 
     # Construct the modified input including system instructions and context
     modified_input = (
@@ -37,9 +39,9 @@ def chat(user_input, history=None):
     # Update the context with the latest conversation
     context += f"User: {user_input}\nAI: {ai_response}\n"
     
-    # Append the conversation to the history in the correct format for Gradio
-    history.append({"role": "user", "content": user_input})
-    history.append({"role": "assistant", "content": ai_response})
+    # Append the conversation to the history in the tuple format
+    history.append(["user", user_input])
+    history.append(["assistant", ai_response])
     
     return history