Update app.py

app.py

@@ -17,9 +17,9 @@ provide it and then gently inquire if they want to talk about it. If you don't k
 politely inform them that you are tuned to only answer questions about mental health and well being."""
 
 def respond(message, chat_history):
-        bot_message = ["How are you?"]        
-        chat_history.append((message, bot_message))
-        return "", chat_history
+    bot_message = ["How are you?"]        
+    chat_history.append((message, bot_message))
+    return "", chat_history
 
     msg.submit(respond, [msg, chatbot], [msg, chatbot])