Hello.
user
Hello, how can I serve you today?
assistant
 I am Michelle Parker. I want to visit DC-IAD to attend my brother wedding. Can you book a direct flight?
user
Ok, please mention your planned trip dates.
assistant
My trip dates are 12/09 and 12/11.
user
Ok, let me know your source airport.
assistant
I will depart from MI-DTW.
user
Ok, we found a direct flight in Hawaiian airline with flight number 1017 and the price is 200. Shall I proceed?
assistant
Ok, you can proceed.
user
Your booking is done.
assistant
 Thank you for booking.
user
Thank you for  choosing us.
assistant