Update app.py

app.py

@@ -77,7 +77,7 @@ def interact(user_input, history, interaction_count):
             raise ValueError("Tokenizer or model is not initialized.")
         
         if interaction_count >= MAX_INTERACTIONS:
-            user_input += " Thank you for your questions. Our session is now over. Goodbye!"
+            user_input += ". Thank you for your questions. Our session is now over. Goodbye!"
         
         messages = history + [{"role": "user", "content": user_input}]