Update app.py

app.py

@@ -1,8 +1,11 @@
 import gradio as gr
 
-def echo(message, history):
-    return message
-    
-chatbot = gr.ChatInterface(echo)
+def random_message(message, history):
+    choices = ["yes", "no"]
+    chat_answer = random.choice(choices)
+    return chat_answer
+
+print("Hello, World!")
+chatbot = gr.ChatInterface(random_message, type = "messages")
 
 chatbot.launch()