Update app.py

app.py

@@ -1,13 +1,19 @@
 import gradio as gr
-
+import random
 
 # Chat function: Respond with what we said 
 def echo(message, history):
     return message 
 
-print('Hello World')
 
-chatbot = gr.ChatInterface(echo)
+def yes_no(message, history):
+    responses = ['Yes', 'No']
+    return random.choice(responses)
+
+
+# print('Hello World')
+
+chatbot = gr.ChatInterface(yes_no, type='messages')
     
 chatbot.launch()