Update app.py

app.py

@@ -122,7 +122,7 @@ if "example_prompt" in st.session_state and st.session_state["example_prompt"]:
     st.session_state.messages.append({"role": "assistant", "content": response})
 
 # React to user input
-if prompt := st.chat_input("😉 Ask any question or feel free to use the examples provided in the left sidebar."):
+if prompt := st.chat_input("😉 Virtual Yiqiao is here to help."):
 
     # Display user message in chat message container
     st.chat_message("user").markdown(prompt)