user_query: start a list called presidents
response_text: Got it, I made a list called "Presidents".
user_query: add george washington to the list
response_text: Got it. George washington on your list called "Presidents". Anything else?
user_query: no thanks
response_text: OK, your list is updated.
User: I want to view a text document of my of my credit card statement.
Parse: Get_bill ( account_type « credit card » document_format « text » )