Update app.py

app.py

@@ -63,7 +63,7 @@ class ChatbotManager:
             # Add conversation history
             for user_msg, assistant_msg in history:
                 messages.append({"role": "user", "content": user_msg})
-                messages.append({"role": "assistant", "content": "🤖 " + assistant_msg})
+                messages.append({"role": "assistant", "content": assistant_msg})
             
             # Add current user input
             messages.append({"role": "user", "content": user_input})