Hi.
Hello, how may I help you?
I want to book a ticket from IAH to IAD, can you help me?
Sure, may I know your trip dates please?
My travel dates are 09/24 and 09/26.
Do you have any other requirements?
I need a direct flight.
Ok, can I know your name please?
I am David Miller.
Sorry, we regret to inform you that there is no flight available as per your request.
No problem, thanks for checking.
Most welcome.