第一句：I want to change a reservation.
A: I want to change a reservation.
B: Is the reservation for yourself or for another party?
A: For me, please. And my name is Mary?
第二句：I’d like to extend it for two more nights.
A: What can I do for you, madam?
B: Yes, my name is Alice, and I made a reservation for two more nights until March 8th.
A: For four nights from March 5th to March 8th. We will make the correction for you.
I’d like to cancel my booking for a single room.
I want to cancel my reservation for two nights in the name of Smith.