Update app.py

app.py

@@ -50,11 +50,11 @@ if authentication_status:
     authenticator.logout("Logout", "sidebar")
     if st.sidebar.button("Refresh Chat"):
         st.session_state.messages = [
-            {"role": "assistant", "content": "How may I help you?"}
+            {"role": "assistant", "content": greeting}
         ]
     if "messages" not in st.session_state:
         st.session_state.messages = [
-            {"role": "assistant", "content": "How may I help you?"}
+            {"role": "assistant", "content": greeting}
         ]
 
     for message in st.session_state.messages: