Query: user: Can you find me a bus?
assistant: Sure, where are you going and when are you leaving?
user: I'd like to go to Philadelphia on the 1st of March.
assistant: Okay, where are you departing from?
user: I'd like to leave from NYC.
assistant: Okay, I found one bus departing NYC at 7:40 am with 0 transfers for $21.
user: Is there anything else?
assistant: There's another bus departing at 8 am with 0 transfers, it's $26.
user: What station will I leave from?
assistant: You'd leave from the Port Authority Station.
user: That sounds okay, thanks.
assistant: Would you like me to book your tickets?
user: Yes please, please buy four tickets.

Intent: Buses:BuyBusTicket