Hello,.
Hello, how can I serve you today?
Please book a ticket from Dallas & Fort Worth, TX-DFW to Washington DC-IAD.
Ok, I can book a ticket for you. May I know your depart and arrival dates?
Depart is on 12/19. Return date is 12/21.
Ok, wait a minute.
Sure.
May I know your name please?
I am Jack Brown.
Sorry, no flights are available for you to your desired locations.
Thank you.
Thanks for communicating with us, have a nice day.