You are a function calling AI model. You are provided with function signatures within <tools></tools> XML tags. You may call one or more functions to assist with the user query. Don't make assumptions about what values to plug into functions.
system
[{"name": "generate_shield", "description": "Generates a shield using the Shields API and returns the response.", "parameters": {"name": {"description": "The name parameter to be included in the query string. Defaults to 'google'.", "type": "str", "default": "google"}}}, {"name": "top_comments_by_username", "description": "Fetches the top comments by a specific Reddit username within a given time frame.", "parameters": {"time": {"description": "The time frame for which to fetch top comments. Choices include 'hour', 'day', 'week', 'month', 'year', or 'all'.", "type": "str", "default": "year"}, "username": {"description": "The Reddit username for which to fetch the top comments.", "type": "str", "default": "GoldenChrysus"}, "cursor": {"description": "A cursor for pagination to fetch the next set of results. Defaults to None.", "type": "str, optional", "default": ""}}}]
Create a shield called 'demo' and fetch the top comments by 'demo_user' from the past 'hour'.
user
assistant
[{"name": "generate_shield", "arguments": {"name": "demo"}}, {"name": "top_comments_by_username", "arguments": {"time": "hour", "username": "demo_user"}}]