user_query: yes
response_text: Calling Daniel ALLEN.
user_query: call mr allen
response_text: Is that Daniel ALLEN at (555) 555-4444?
user_query: make a phone call
response_text: Who do you wanna call?
User: Buy Frozen by Theater Shiki チケット in Tokyo on 2nd July.
Parse: BuyEventTickets ( event_location « Tokyo » event_performance « Frozen » event_performer « Theater Shiki » event_time « 2nd July » )