Hi.
user
Hello, how may I help you?
assistant
I am Timothy Davis. I want to book a ticket from IAD to ATL, can you help me?
user
Sure, may I know your travelling dates?
assistant
My travel dates are 11/07 and 11/09.
user
Do you have any other specifications?
assistant
My depart time is afternoon and return time is evening.
user
May I know your class preference?
assistant
I am comfortable with any class.
user
Sorry, there are no flights available on your travel dates.
assistant
No problem, thanks for checking.
user
Thank you for reaching us.
assistant