Domains: Flights_13

user: I'd like to book a one-way flight.

system: Any particular airline?

user: Delta Airlines if possible.

system: Where are you leaving from?

user: From Vancouver, BC.

system: And where do you want to go?

user: Las Vegas, leaving on the 5th of March. Business or economy.

system: I have an Economy Delta Airlines flight leaving Vancouver for Las Vegas next Tuesday. Is 1 ticket enough?

user: Yes, that sounds good.

system: I have booked your one-way flight.

user: Thanks. That's all I need.

system: Have a nice day.