Update app.py

app.py

@@ -25,5 +25,6 @@ def echo(message, history):
     choices = ["Without a doubt", "Ask again later","Yes, definitely","Don't count on it"]
     response = random.choice(choices)
     return response
+gr.themes.builder()    
 chatbot = gr.ChatInterface(respond, type = "messages")
 chatbot.launch(debug=True)