user_query: christmas list
response_text: You have one thing on that list.
user_query: add ice cram
response_text: Got it, I added ice cream.
user_query: nevermind that. add to grocery list instead
response_text: Sure, I changed the list title to "Grocery."
User: Add running workout starting at 7, no 8am.
Parse: Log_exercise ( activity « running » time « 8am » )