user_query: playoff tree add to list
response_text: Got it. Which list do you want to add to?
user_query: put eggs on list
response_text: OK. Which list do you want to add to?
user_query: don't add
response_text: OK
User: Get me AC/DC tickets for March 2023, make that April 2023 in Indianapolis.
Parse: BuyEventTickets ( event_location « Indianapolis » event_performer « AC/DC » event_time « April 2023 » )