Hello. Myself Paul Carter.
user
Hello. How may I help you out?
assistant
Will you help me in booking the flight ticket from OAK to IAD?
user
Sure, I will help you in booking the ticket. May I know your travelling dates please?
assistant
My preferable journey dates are 12/13 and 12/15.
user
Sorry, there are no flights found.
assistant
Ok, not an issue. Thank you for your information.
user
Thank you for reaching us.
assistant