user_query: Add Rice, egg and cooking oil to my Grocery list.
response_text: Sure, I added Rice, egg and cooking oil.
user_query: Remove Cooking oil and egg from the list.
response_text: I couldn't find those two things.
user_query: Remove Cooking oil and egg from my grocery list.
response_text: I couldn't find those two things on your list called "Grocery."
user_query: Remove egg and Cooking oil from my grocery list.
response_text: I couldn't find those two things on your list called "Grocery."
user_query: Add Rice, egg and cooking oil to my Grocery list.
response_text: Sure. Rice, egg and cooking oil on your list called "Grocery". Anything else?
User: I want you to get me tickets to the concert at 8, I mean 7.
Parse: BuyEventTickets ( event_time « 7 » event_type « concert » )