Query: user: Please help me to find a bus.
assistant: Where are you off to and when do you plan to leave?
user: I'm going to Portland, Or on March 4th.
assistant: Where are you departing from?
user: I'm leaving from Vancouver, BC.
assistant: Economy class ticket is available for $34 on the bus that leaves at 9:20 am.
user: Which bus station does this bus arrive at?
assistant: Its destination is Portland Bus Station.
user: And from which bus station will I be departing?

Intent: Buses:FindBus