Update app.py

app.py

@@ -1,11 +1,11 @@
 import gradio as gr
-import random as rand
+import random
 
-def answer(message):
-	return message
+def echo(message, history):
+    return random.choice(["Yes", "No"])
 
 print("Hello, world!")
 
-chatbot = gr.ChatInterface(answer)
+chatbot = gr.ChatInterface(echo)
 
 chatbot.launch()