Update app.py

app.py

@@ -145,10 +145,10 @@ async def handle_message(message: cl.Message):
         response = await api_chain.acall(user_message, 
                                          callbacks=[cl.AsyncLangchainCallbackHandler()])
 
-        elif 
-            # <or if the booking_id regex format is discovered in user message>, use api_chain
-            re.search(keyword, r'\b[A-Z]{6}\d{6}\b', user_message, re.IGNORECASE):  
-                response = await api_chain.acall(user_message, 
+    elif: 
+        # <or if the booking_id regex format is discovered in user message>, use api_chain
+        re.search(keyword, r'\b[A-Z]{6}\d{6}\b', user_message):  
+            response = await api_chain.acall(user_message, 
                                          callbacks=[cl.AsyncLangchainCallbackHandler()])
 
     else: