make respond with "yes" or "no"

app.py

@@ -1,11 +1,19 @@
-import gradio as gr 
+import gradio as gr
 
-def echo (message, history):
-    print(message)
-    print(history)
-    return message
+def yes(message, history):
+    return "yes"
 
-chatbot = gr.ChatInterface(echo, type= 'messages')
-chatbot.launch()
+def vote(data: gr.LikeData):
+    if data.liked:
+        print("You upvoted this response: " + data.value["value"])
+    else:
+        print("You downvoted this response: " + data.value["value"])
+
+with gr.Blocks() as demo:
+    chatbot = gr.Chatbot(placeholder="<strong>Your Personal Yes-Man</strong><br>Ask Me Anything")
+    chatbot.like(vote, None, None)
+    gr.ChatInterface(fn=yes, type="messages", chatbot=chatbot)
+    
+demo.launch()