Hello.
user
Hello. HOw may I aid you?
assistant
I am Kevin Phillips. I am trying to book a flight ticket from SEA on 12/07. Can you please check the flight?
user
Sure, I will help you out in booking the ticket.
assistant
Thank you.
user
May I know your return journey details please?
assistant
My destination airport code is DCA and  the return date is 12/09.
user
Ok, please wait for a while.
assistant
Ok, I can wait for your response.
user
Sorry, there are no flights found.
assistant
It's ok, thank you for the information.
user
Thank you for choosing us.
assistant
You are welcome.
user