C121 Can Not be

The receptionist quickly explained: "Miss Mo, I'm very sorry, it's all our hotel system's fault. You did reserve six rooms, but the system made a mistake. The rooms you booked have already been checked in by someone else "

Mo Xiaoxiao said, "Then you can change the rooms for us."

The receptionist looked a little awkward. "Miss Mo, I'm really sorry! Because today is Friday