Hello.
user
Hello, how may I aid you?
assistant
I want to book a flight ticket from IAD to DFW. Could you help me in  booking?
user
Can I know your travelling dates?
assistant
My travelling dates are from Feb 05 - 07.
user
Do you need a single connecting flight?
assistant
I prefer for direct flight.
user
May I know your other specifications?
assistant
I need to travel in economy class.
user
Please, provide your name.
assistant
Janet Moore.
user
Sorry, there are no flights available on your request.
assistant
That's ok, no problem. Thank you.
user
Thank you for choosing us.
assistant