overbook

The airline often overbooks popular flights because they expect some passengers not to show up.

(Chinese) 航空公司经常在热门航班上超额售票，因为他们预计会有乘客不出现。

We were offered a free upgrade to a suite because the hotel had overbooked the standard rooms.

(Chinese) 由于酒店的标准间超额预订了，我们获得了免费升级到套房的机会。