user_query: renive all items from my to-do list
response_text: You have two lists with similar names. Which one do you want to clear?
user_query: yes
response_text: It looks like that list is already empty.
user_query: I want to see all of my lists
response_text: You have quite a few lists.
user_query: clear all the lists
response_text: You have eleven lists. Which one do you want to clear?
user_query: create a to-do list
response_text: Sorry, it looks like you already have a list with that name. Do you still want to make a new one?
User: I want eggs added to the christmas list
Parse: Add_item_to_list ( items « eggs » list_label « christmas » list_singular_or_plural « list » )