What does it mean to confirm the flight change of China Southern Airlines?

Flight changes need to be confirmed. China Southern Airlines Group Co., Ltd., headquartered in Guangzhou, was formally established on 1 991February1. With the blue vertical tail inlaid with red kapok as the company logo, it is the airline with the largest number of transport planes, the most developed route network and the largest annual passenger traffic in China. If the flight is changed in advance, the staff will inform in advance and check the flight dynamics in real time. The flight change of China Southern Airlines needs to be confirmed, that is, the flight change needs to be confirmed. China Southern Airlines can carry out 2 1 international and regional routes every week. China Southern's annual passenger traffic ranks first in Asia and third in the world. The fleet size ranks first in Asia and fourth in the world. It is the airline with the largest number of flights, the densest route network and the largest annual passenger traffic in China.