Hello. Frank Harris here.
user
Hello. How can I help you?
assistant
I will be visiting to Washington IAD, can you check for the flights from OAK?
user
Sure, may I know your travelling dates please?
assistant
My travelling dates will be from 03/25 to 03/27.
user
Ok, do you need any halt in between the journey?
assistant
Yes, 1 stopover is preferable.
user
Please wait.
assistant
Sure.
user
Thank you for waiting, we found a flight with number 1027 and airline UA at a price of 100 with 1 connection in class economy. Shall I proceed with booking?
assistant
Please confirm my reservation.
user
Sure, your booking is done.
assistant
Thank you for helping me.
user
Thank you for opting us, have  a nice day.
assistant
Most welcome.
user