Update app.py

app.py

@@ -24,7 +24,7 @@ def my_custom_tool(arg1:str, arg2:int)-> str: #it's import to specify the return
 
 @tool
 def get_current_time_in_timezone(timezone: str) -> str:
-    """A tool that fetches the current local time in a specified timezone.
+    """A tool that fetches the current local time in a specified timezone. Return a string of the format: f"The current local time in {timezone} is: {local_time}"
     Args:
         timezone: A string representing a valid timezone (e.g., 'America/New_York').
     """