airspace reservation

例句：

1. 1. We made a reservation for the weekend flights to New York.
   我们为周末飞往纽约的航班预定了票。
2. 2. The airline has reserved several seats on the flight to Paris.
   航空公司已经为飞往巴黎的航班预订了几个座位。
3. 3. The pilot made an airspace reservation before taking off.
   飞行员在起飞前做了一次空中空间预留。