Domains: Flights_23

user: Hello, I am looking for a flight.

system: From where and when would you like to depart? Also, where is your intended destination?

user: I am looking for an economy flight from Chicago to Portland on Monday next week.

system: When would you like to return from Portland?

user: I will be returning on the 11th. I would also like to purchase four tickets.

system: There is a flight by Southwest Airlines which departs at 4:35 am and returns at 3:15 pm. The tickets cost $301, are you interested?

user: Yes! Thank you very much.

system: Have a great day ahead.