Domains: RentalCars_13, Buses_13, Flights_23

user: Look up compact rental cars.

system: Picking up where and at what time? Which date?

user: Picking up next Wednesday in Philadelphia at eight pm.

system: Return date?

user: March 11th.

system: I found 3 matches. There's a compact Cooper at Intercity Terminal on March 6th.

user: Good. Find a bus there from NYC, leaving Sunday this week.

system: There's a bus with 0 transfers leaving 7:40 am for $24.

user: Leaving which station?

system: Port Authority Station.

user: Anything else available?

system: There's a bus with 0 transfers leaving 8 am for $19.

user: Anything else? I need four tickets.

system: There are 5 matches. There's a bus with 0 transfers leaving 11:30 am for $20.

user: Good, find a round trip flight there now.

system: Leaving March 6th and returning March 11th?

user: Yeah but leaving the 4th of this month.

system: There's an American Airlines flight leaving 7:55 am and returning 5:35 pm for $74.

user: Anything else?

system: There's a Delta Airlines flight leaving 6:55 pm and returning 4:40 pm for $65.

user: Anything else in economy?

system: I found 1 United Airlines flight leaving 10:45 am and returning 9 pm for $58.

user: Ok, thanks. Bye.

system: Have a nice day.