Update utils/chatbox.py

utils/chatbox.py

@@ -8,7 +8,7 @@ def display_chat_history(model_name: str):
             st.markdown(message["content"])
 
 def chat_input(model_name: str):
-    if prompt := st.chat_input("Say something"):
+    if prompt := st.chat_input("Hi, I'm here to help with any questions you have about California drinking water regulations."):
         # Display user message in chat message container
         st.chat_message("user").markdown(prompt)