Hello.
user
Hello, how may I guide you?
assistant
I am Robert Miller. Could you help me in booking a flight ticket from IAH to IAD?
user
Sure, can I know your preferable dates?
assistant
I am planning to start on 12/27 and return back on 12/29.
user
I am sorry, there are no flights available.
assistant
Ok, thank you for the information.
user
Thank you, have a good day.
assistant