user_query: clear my home depot items from the list
response_text: Are you sure you want to go ahead and clear it?
user_query: my home depot list
response_text: You have eleven lists. Which one do you want to clear?
user_query: yes
response_text: You have eleven lists. Which one do you want to clear?
user_query: create a home depot 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_query: no
response_text: No problem, nothing's been changed.
User: Put 3 more things on the grocery list
Parse: Add_item_to_list ( list_label « grocery » list_singular_or_plural « list » )