Hello.
user
Hello, how can I assist you?
assistant
I am Barbara Allen here. Can you please help me with booking a flight ticket from IAD to LAS?
user
Sure, please share your planned trip dates.
assistant
My planned trip dates are Aug 14 and Aug 16.
user
Let me know your connection limit.\.
assistant
I need a connecting flight in my journey.
user
Do you have any other specifications?
assistant
I need  to book my ticket in economy class and my departure time should be in the evening.
user
We found an AA airlines with 0 connections and your depart time in the evening. Shall I proceed for booking?
assistant
That's fine for me, please proceed  with booking.
user
Your ticket has been confirmed with economy class and flight number is 1000.
assistant
Thank you very much in reserving my ticket for the flight-1000.
user
Thank you for choosing us.
assistant