Since a number of people don't take the flight they book anyway, this makes sense.

鉴于很多人没能搭乘所预订的航班，上述就有了意义。

youdao

Yeah, she will take an China Air flight to come to Beijing next Monday and the flight number is CA104.

没错，她下星期一坐中国民航的飞机来北京，航班是CA104。

youdao

Ok! I'll take three. What's the flight number?

好！我要三张。飞机的航班号是多少？

youdao

The participants in the challenege will get a two month set of data from the National Airspace System, which includes a slew of data such as flight number, origin, destination, take-off time, arrival time, latitude and longitude at frequent interim waypoints along the journey and weather and wind data.

FORBES: Move up http://i.forbesimg.com t Move down

Airport workers take a photo of the device with the seat number, date and flight number written on it.

WSJ: Oops! I Forgot My iPad on the Plane