Update app.py

app.py

@@ -2387,12 +2387,16 @@ if __name__ == "__main__":
         
         def simple_chat(message):
     """Enhanced fallback function"""
+    if not message.strip():
+        return "Please enter a message to start chatting!"
+    
     responses = [
-        "🤖 Cosmic AI is starting up... Please wait!",
-        "🔄 AI model is loading, your patience is appreciated!",
-        "⏳ System initialization in progress...",
-        "🌟 Getting ready to chat with you!"
+        f"🤖 Cosmic AI is starting up... Your message '{message}' received!",
+        f"🔄 AI model is loading, processing your message: '{message}'",
+        f"⏳ System initialization in progress... Message: '{message}' noted!",
+        f"🌟 Getting ready to chat with you about: '{message}'"
     ]
     import random
     return random.choice(responses)
 
+