Query: user: I need a rental car in Portland, OR till march 14th.
assistant: What time would you need it for and when?
user: I would need it on the 7th for half past 1 in the afternoon.
assistant: I have found 3 suitable cars. There is a lovely standard ford fusion available for pick up at union station on March 7th.
user: How much would that cost?
assistant: That would be $210 in all.
user: That would be ok. I would also need economy bus tickets for the 4th of March.
assistant: Where would you be departing from?
user: I would be leaving Seattle.
assistant: There are 10 buses available. There is a economy seat for $28 on a bus leaving at 6:10 am. Would that suit you?
user: Yes, it would. I would need a round trip.
assistant: You want to return on March 14th?
user: Yes, that's correct.

Intent: Flights:SearchRoundtripFlights