Hello.
user
Hello, how may I help you?
assistant
I'm Ruth Nelson, want to travel from IAD to DFW.
user
May I know your travelling dates?
assistant
My travelling dates are from 07/29 to 07/31.
user
Sorry Nelson, there is no flights available as per your requested dates.
assistant
That's fine. Thank you for your time.
user
Most welcome.
assistant