遗失信财物遗失在民航班机上，写信给机场海关请求帮助Dear officer:On 01/01/2000， I am writing to inform you that I lost my bag on your flight and ask for your help.I took flight CA983 from Beijing to Los Angeles. When the flight arrived at Los Angeles， because of my carelessness， I left my handbag， a black leathered bag， on my seat. There are some important things in it， including my passport， ID card， credit card， some checks and one thousand US Dollars. But the most important thing is my business address book， in which record all my clients’ phone numbers and appointment agenda in the following two weeks.