Hello.
user
Hello, how can I help you?
assistant
I am looking for a flight from IAD to SEA, can you please help me in booking?
user
May I know your desired travel dates please?
assistant
My travelling dates are Feb 25 and Feb 27.
user
Do you have any specifications?
assistant
I prefer business class.
user
May I know your name please?
assistant
My name is Brian Taylor.
user
Sorry to say, there is no flight on your desired travel dates.
assistant
That's ok, thank you for checking.
user
Thank you for opting us.
assistant