Update app.py

app.py

@@ -52,7 +52,7 @@ for message in st.session_state.messages:
 
 
 # React to user input
-if prompt := st.chat_input("What is up?"):
+if prompt := st.chat_input("😉 Ask any question or feel free to use the examples provided in the left sidebar."):
 
     # Display user message in chat message container
     st.chat_message("user").markdown(prompt)