made echo function

app.py

@@ -1,5 +1,7 @@
 import gradio as gr
 
-
-chatbot = gr.ChatInterface() #defining my chatbot so user can interact
+def echo(message, history):
+    return history #making an echo ting
+    
+chatbot = gr.ChatInterface(echo) #defining my chatbot so user can interact
 chatbot.launch()