Hello.
Hello, how may I guide you?
I am john Young. I would like to book a flight ticket from IAD to ORD. Could you help out?
Sure, can I know your preferable dates?
I am starting on 10/27 and return back on 10/29.
I am sorry, there are no flights available.
Ok, no problem. Thank you for the information.
Thank you, have a good day.