A guest wants to check in, and he tells us that he has a reservation. So we could say （ ）。

A、Good morning/afternoon/evening, Welcome to XX Hotel.
B、Sir/Madam, do you have a reservation?
C、May I have your name, please? ...Yes, Mr./Ms. SMITH. You booked a standard room for 2 nights on June 7-8. Is that right?
D、Here is your passport. Please keep it.