Hello.
user
Hello, how may I aid you?
assistant
I need a flight ticket reservation from Oakland, CA - OAK to Seattle, WA - SEA.Can you book a ticket  for me?
user
Sure, I will book a ticket, we need your traveling dates and your name, could you please provide me?
assistant
My preferable dates are departure 01/06 and return on 01/08 with price limit 200 and connection limit must be one. David Brown is my name.
user
Thanks for providing your details, please wait a moment, I will check and get back to you.
assistant
OK.
user
Thanks for waiting, I am sorry to say that there is no flight on your route .
assistant
OK, no problem.
user
Thank you choosing us.
assistant
Thanks for your information.
user
Have a nice day.
assistant