Query: user: I'm going on a trip. Could you find a good bus for me?
assistant: Sure. What day are you leaving?
user: I'm departing from Portland, OR on the 4th of March.
assistant: What city are you heading to?
user: Vancouver.
assistant: There are 8 possible buses. One of them leaves at 6:50 am and has 0 transfers. One ticket costs $45.
user: What station does this bus go to, and which station does it depart from?
assistant: It goes from Portland Bus Station to Pacific Central Station.
user: Sounds great.
assistant: Shall I purchase tickets for you?
user: Yeah. Please get me 2 tickets.

Intent: Buses:BuyBusTicket