Hi.
user
Hello, how may I help you?
assistant
I am Nicholas Robinson. Could you please book a ticket to Atlanta, ATL from Washington, IAD?
user
Sure, may I know your preferable dates?
assistant
My travelling dates are 12/26 and 12/28.
user
Sorry, there are no flights available for given schedule.
assistant
Ok, not an issue. Thank you for the information.
user
Thank you for reaching us.
assistant