Update app.py

app.py

@@ -56,8 +56,18 @@ chat_engine = index.as_chat_engine(
     ),
 )
 
+def is_greeting(user_input):
+
+    greetings = ["hello", "hi", "hey", "good morning", "good afternoon", "good evening", "greetings"]
+    user_input_lower = user_input.lower().strip()
+    return any(greet in user_input_lower for greet in greetings)
+    
 import gradio as gr
 def chat_with_ai(user_input, chat_history):
+    if is_greeting(user_input):
+        response = chat_engine.chat(user_input)
+        chat_history.append((user_input, greeting_response))
+        return chat_history, ""
     response = chat_engine.chat(user_input)
     references = response.source_nodes
     ref,pages = [],[]