Hello.
user
Hello. How can I help you today?
assistant
Will you help me in booking the flight ticket from DCA to DFW?
user
Sure, I  will help you with that. Can you please share your preferable travel dates?
assistant
My preferable journey dates are Aug 17 and Aug 19.
user
Would you like to travel in a connecting flight or a direct flight?
assistant
I need a direct flight in between my journey.
user
Do you have any other specifications?
assistant
No, thank you for asking.
user
May I know your name please?
assistant
Myself Williams Collins.
user
Sorry to say that, there are no flights found on this route as per your travel dates.
assistant
Ok, not an issue. Thank you for your information.
user
Thank you for reaching us, have a great day.
assistant