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_user_dialog_string", "description": "Fetches the dialog string for a given user from the Waifu API.", "parameters": {"user_id": {"description": "A unique identifier for the user.", "type": "str", "default": "sample_user_id"}}}, {"name": "match_embed_link", "description": "Generates a live stream link for a given football match using the provided RapidAPI key.", "parameters": {"matchid": {"description": "The unique identifier for the football match.", "type": "int", "default": "1"}}}]
Could you please retrieve the dialog string for the user with id 1234567890 on the Waifu API?
user
assistant
[{"name": "get_user_dialog_string", "arguments": {"user_id": "1234567890"}}]