Hello.
user
Hello, how may I serve you at this moment?
assistant
I am Donald Baker. Can you book a flight ticket from Washington, IAD to Dallas, DFW?
user
Sure, we are rapturous to help you. Can you please let me know your journey dates?
assistant
Thank you. Sure, My travelling dates are from 04/17 to 04/19.
user
Do you prefer any connection in between journey?
assistant
I prefer a connecting flight.
user
Ok, please stand by, let me check with the airlines and revert to you.
assistant
Sure.
user
We found a AA airlines matching your preferences, and its  cost you only 100,.
assistant
Ok, You can proceed with booking.
user
Your ticket has been reserved with 1002 flight number.
assistant
Thank you.
user
Thank you for reaching us.
assistant