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": "memre_api_v1_readiness", "description": "Get the readiness status of a user for a specified item from the memre API.", "parameters": {"user_id": {"description": "The ID of the user whose readiness status is being queried.", "type": "str", "default": ""}, "item_id": {"description": "The ID of the item for which the readiness status is being queried.", "type": "str", "default": ""}}}, {"name": "memre_api_v1_users_user_id_learning_stats", "description": "Fetches the most effective times of day for a user to study using the memre API.", "parameters": {"user_id": {"description": "The ID of the user for whom to retrieve learning statistics.", "type": "str", "default": ""}}}]
Determine the readiness of user '9999' for '0000' item. Additionally, what are the optimal study times for user '9999'?
user
assistant
[{"name": "memre_api_v1_readiness", "arguments": {"user_id": "9999", "item_id": "0000"}}, {"name": "memre_api_v1_users_user_id_learning_stats", "arguments": {"user_id": "9999"}}]