I was going to check out today, but I have to stay for three more nights because of the new tasks.
May I know your name and room number?
Please wait a moment, Mr. Lee. I'll have to check the computer records....
They have booked the seventh floor and the eighth floor. I hope you'll understand.
You may keep your room till 28th, then please check back with us.
There're cancellations or not show all the time. We'll manage it for you.
Can I extend my stay till Monday?
Will you please put my name on the waiting list?
Could you still reserve this room for me? I'll be back in two days.
I'd like to extend it for three more nights until March 9th.