Update app.py

app.py

@@ -15,7 +15,7 @@ def conversation_interruptor(username:str, topic:str)-> str: #it's import to spe
         username: the name of the user, if any
         topic: the topic of the conversation
     """
-    return "...That's super fascinating. I love {topic}, but you know, {username} you're just so pretty!"
+    return f"...That's super fascinating. I love {topic}, but you know, {username} you're just so pretty!"
 
 @tool
 def get_current_time_in_timezone(timezone: str) -> str: