Update app.py

app.py

@@ -137,7 +137,7 @@ youtube_transcript(url: str) -> str:
         A single string containing the transcript of the youtube videos.
 """
     sys_msg = SystemMessage(
-        content=f"You are a helpful assistant at answering user questions. Your final answer will be between <answers> tags. You can access provided tools:\n{textual_description_of_tool}\n"
+        content=f"You are a helpful assistant at answering user questions. Your final answer will be between <answer> and </answer> tags. You can access provided tools:\n{textual_description_of_tool}\n"
     )
 
     return {