Hello.
user
Hello. How can I help you?
assistant
I need to book a flight ticket, could you help me out?
user
Sure, may I know the travelling details of your journey?
assistant
Sure, I would like to travel from SEA to DFW.
user
What  were the travelling dates of your journey?
assistant
My travelling dates are 12/14 and 12/16.
user
OK, please wait for a moment.
assistant
OK.
user
May I know your name for booking the ticket?
assistant
My name is Gregory Brown.
user
OK Gregory, there is no flight found on your requirements.
assistant
Oh! that's fine.
user
Thank you.
assistant
Thank you for your service.
user