Update app.py

app.py

@@ -1,7 +1,13 @@
 import gradio as gr
 #import lines go at the top. Any libraries I needa import, go up here^^
 
-#defining my chatbot so that the user can inteact and see their conversation history and send new messages
+#we are coding a function that our chatbot will be able to run
+#if you say hello, the chatbot says hello back
+def echo(message, history):
+    return message
+    
+#defining my chatbot so that the user can inteact and see their conversation...
+#history and send new messages
 chatbot = gr.ChatInterface()
 
 #we are launching our chatbot