Hi.
user
Hello, how may I aid you?
assistant
Please book the flight ticket from DCA to SFO.
user
Sure, may I know your travelling dates?
assistant
My trip is in Jan from 14th to 16th.
user
Do you have any requirements?
assistant
I need to depart in evening on a connecting flight.
user
Can I know your name?
assistant
Catherine Collins here.
user
Sorry to say, no flight is available for you.
assistant
That's ok, thank you for your information.
user
Thank you for reaching us.
assistant