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": "get_profile_info", "description": "Fetches the profile information from Pinterest for a given username using the RapidAPI service.", "parameters": {"username": {"description": "The Pinterest username for which the profile information is to be retrieved.", "type": "str", "default": "nasa"}}}, {"name": "user_by_rest_id", "description": "Fetches user information from Twitter using a REST API by user ID.", "parameters": {"is_id": {"description": "The user ID to fetch information for.", "type": "str", "default": "44196397"}}}, {"name": "get_user_id_by_username", "description": "Fetch the Instagram user ID associated with a given username.", "parameters": {"username": {"description": "The Instagram username for which the user ID needs to be retrieved.", "type": "str", "default": "abdallhdev"}}}]
Find the Instagram user IDs for users with usernames 'emily_engineer', 'frank_farmer', 'grace_gardener', and 'helen_hiker'.
user
assistant
[{"name": "get_user_id_by_username", "arguments": {"username": "emily_engineer"}}, {"name": "get_user_id_by_username", "arguments": {"username": "frank_farmer"}}, {"name": "get_user_id_by_username", "arguments": {"username": "grace_gardener"}}, {"name": "get_user_id_by_username", "arguments": {"username": "helen_hiker"}}]