Update app.py

app.py

@@ -24,7 +24,7 @@ def respond(message, history):
     messages.append({"role": "assistant", "content": bot_msg})
 
     # Add latest user message
-    messages.append("role": "user", "content": message})
+    messages.append({"role": "user", "content": message})
 
     #Get model response
     response = client.chat_completion(