user_query: Morning Task list
response_text: Which item?
user_query: Can you remove cheese from that list?
response_text: You have two lists. Which one do you want to delete items from?
user_query: Add buy milk and cheese in morning task list
response_text: OK, I made a list called "Morning Task" and added those two things.
User: Log my lunch of an apple and an RxBar.
Parse: Log_nutrition ( food « apple » food « RxBar » meal « lunch » )