user_query: Attend music class.
response_text: Sure, I'll remind you on Tuesday at 4:00 PM.
user_query: Add a reminder on October 31st and November 1st at 4 pm.
response_text: Got it, on Tuesday at 4:00 PM. What's the reminder?
User: Can I buy concert tickets for Aug 29, I mean 30?
Parse: BuyEventTickets ( event_time « Aug » event_time « 30 » event_type « concert » )