適用年齡：無陪兒童是指年齡在5周歲（含）以上至12周歲以下的兒童。 

購票規定：無陪兒童的票價通常按正常成人票價的50%收取。購買無陪兒童票時，需要提供兒童的身份證明文件（如戶口本、身份證或護照等）以及家長的有效證件。

預訂和辦理：無陪兒童機票的座位預訂時間一般截止到起飛日期之前的那段時間，建議提前了解清楚預訂座位的流程和時間要求。家長需要提前到達機場，辦理好相關的手續，并將兒童交到航班乘務員手中。 

安全和服務：航空公司會對無陪兒童提供特殊的服務和照顧，例如在航班上的監控和地面接送服務。家長需要提供在航班到達站安排的接送人姓名、聯系地址、電話等信息。

 限制和例外：每個航班運送的無陪兒童數量有限。此外，航空公司一般不接受5周歲以下兒童的無陪乘機申請。 請注意，具體的規則可能會根據不同航空公司的規定有所差異，因此在購票前最好直接咨詢相關航空公司獲取最準確的信息。

Applicable Age: Unaccompanied children refer to children aged 5 (inclusive) to under 12. 

Ticketing: The ticket price for unaccompanied children is usually 50% of the regular adult fare. When purchasing a ticket for an unaccompanied child, need to provide the child's identification documents (such as a household registration book, ID card, or passport) and the parent's valid identification. 

Booking and Processing The booking time for unaccompanied children's seats is generally up to the day before the flight date. It is recommended to understand the booking process and time requirements advance. Parents need to arrive at the airport early, complete the necessary procedures, and hand the child over to the flight attendants. 

Safety and Service: Airlines special services and care for unaccompanied children, such as monitoring during the flight and ground pick-up and drop-off services. Parents need to provide the name, address, and phone number of the person arranging the pick-up at the destination. 

Restrictions and Exceptions: There is a limit on the number of unaccompanied each flight can carry. Additionally, airlines generally do not accept applications for unaccompanied children under the age of 5. Please note that the specific rules may depending on the airline, so it is best to consult the relevant airline directly for the most accurate information before purchasing a ticket.