The flight is not initialized, which means that the information of the flight is not established in the system, such as passenger reservation list, flight number, boarding slogan, etc. Even the counter can't handle it at this time.

A flight refers to any scheduled flight that uses aircraft to transport passengers, mail or goods. It also refers to a certain number of passenger ships or passenger planes, or the number of passenger ships or passenger planes sailing. It consists of the two-character code of each airline plus four digits, and the airline code is promulgated by the Civil Aviation Administration. The last four digits represent the region where the airline base is located, the second digit represents the region where the terminal building outside the flight base is located (1 is in North China, 2 is in Northwest China, 3 is in South China, 4 is in Southwest China, 5 is in East China, 6 is in Northeast China, 8 is in Xiamen and 9 is in Xinjiang), and the third and fourth digits represent the sequence number of this flight, with odd numbers representing flights departing from the base and even numbers representing flights returning to the base. A flight refers to a transport flight in which an aircraft takes off from the starting station according to the prescribed route, passes through a stop and reaches the terminal or directly reaches the terminal without a stop. Flights on international routes are called international flights, and flights on domestic routes are called domestic flights.