user_query: Check off "pay internet bill".
response_text: I couldn't find Check off "pay internet bill on your list called "To-Do."
user_query: Oh, sorry; can you check off some things from the to-do list?
response_text: Which item?
user_query: Add a couple of items to the to-do list.
response_text: What do you want to add?
User: Add peanuts to the Hollow Halloween ween list.
Parse: Add_item_to_list ( items « peanuts » list_label « Halloween » list_singular_or_plural « list » )