user_query: Make an addition to the grocery list
response_text: What do you want to add?
user_query: No need to add to the list
response_text: What do you want to add?
User: I want to get tickets for the rock concert at La Coopérative de Mai.
Parse: BuyEventTickets ( event_location « La Coopérative de Mai » event_type « rock concert » )