Hello.
user
Hello, how may I assist you today?
assistant
I am Anna Johnson and I want to book a flight ticket to attend a workshop at DC-IAD from CA-SFO.
user
Ok may I know your travelling dates?
assistant
My travelling dates are from 10/29 to 10/31.
user
Please hold on, I will check the availability and revert you.
assistant
Ok.
user
Thanks for your time. Unfortunately there are no flights available for you according to your request.
assistant
No issue. Thank you for your service.
user
Thank you for reaching us.
assistant