Hi.
user
Hello, how could I serve you at this moment?
assistant
I am Robert Moore. I would like to meet my grandmother at Washington, help me in booking my flight ticket with direct flight.
user
Sure, may I know your travelling dates?
assistant
My travelling dates will be from 12/14 to 12/16.
user
Ok, provide your near by airport codes?
assistant
My airport codes will be from OAK to IAD.
user
Thank you for providing information. There is no direct flight available at this moment.
assistant
Its ok, thank you for your support.
user
Thank you for choosing us, hope to serve you better next time.
assistant