tried to fix the chatbot error

app.py

@@ -120,8 +120,12 @@ def respond(message, history,use_spanish, destinations, season, luggage_types, l
         max_tokens =  1000,
         temperature = 1
     )
+
+    reply = response['choices'][0]['message']['content'].strip()
+    history.append((message, reply))
+    return history, ""
     
-    return response['choices'][0]['message']['content'].strip()
+    #return response['choices'][0]['message']['content'].strip()
     
 
 with gr.Blocks() as demo: