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": "produce_mixy_words_list", "description": "Generates a list of random words based on the specified amount and difficulty level by querying the Mixy Word Guess API.", "parameters": {"amount": {"description": "The number of words to generate. Valid values are integers between 1 and 100. Default is 10.", "type": "int, optional", "default": "10"}, "difficulty": {"description": "The difficulty level of the words. Valid values are \"easy\", \"medium\", and \"hard\". Default is 'easy'.", "type": "str, optional", "default": "easy"}}}, {"name": "title_cast_crew", "description": "Fetches and returns the cast and crew information of a given title from the Watchmode API.", "parameters": {"is_id": {"description": "The ID of the title. This can be the Watchmode ID, IMDB ID, or a TMDB type and ID combination.", "type": "str", "default": "3173903"}}}]
I'm looking for the cast list of 'Avengers: Endgame' using its IMDB ID, and could you also give me 8 medium difficulty words for a quiz?
user
assistant
[{"name": "title_cast_crew", "arguments": {"is_id": "tt4154796"}}, {"name": "produce_mixy_words_list", "arguments": {"amount": 8, "difficulty": "medium"}}]