Domains: Flights_13

user: I want to travel soon, can you help me book a one way ticket to SD

system: When and where do you plan to leave from?

user: From Vancouver on the 1st of this month

system: Do you prefer a certain Airline?

user: Yes, Delta Airlines. I need 4 tickets.

system: Confirming 4 economy tickets for today from Vancouver to San Diego via Delta Airlines

user: Actually I am leaving from New York

system: Ok, so a flight from New York with economy class seating

user: Yes that's good

system: Your ticket is confirmed

user: Thanks, that's all

system: Have a wonderful day