请指点(看有没有语法或知识错误,或者怎么样更好)

请指点(看有没有语法或知识错误,或者怎么样更好)
Dear Sir,
I am writing to you with some ideas of what you can do with the items that passengers leave on your planes.
First,you can divide the items into different kinds according to the use,the value or how long they can keep.In my opinion,you can divide them into food&drinks,daily use things (Such as clothes,umbrellas,medicine and books),valuables and something urgent for passengers.As thus,when someone looks for these items,you can find them out in a very short time.
I think you should keep items like the jewellery for a long time to see if anyone asks for it.A year later you can sell it and give the money to help the poor or the sick.You can give the books to the local library and clothes to the people who need them in a week.Some food and drinks can be thrown away after 24 hours.Also you should set up a special telephone line for “Lost and Found”.So if passengers noticed that they might have lost something important (like passports) on your planes,they were to call back to inquire.
I hope my ideas can help you!
Sincerely yours,
Sandy

个人意见仅供参考.见括号里
Dear Sir,
I am writing to you with(del with,用about) some ideas of what you can do with the items that passengers leave on your planes.
First,you can divide the items into different kinds according to the use(del use,用名词）,the value or how long they can （加上be) keep (kept).In my opinion,you can divide them into food&drinks,daily use things (Such as clothes,umbrellas,medicine and books),valuables and something urgent for passengers.As thus,when someone looks for these items(det these items,用 something),you can find them (del them,用it) out in a very short time.
I think you should keep items like the jewellery for a long time to see (del to see) if anyone (del anyone,用someone） asks for it （add in the future).A(del A,用 One）year later you can sell it and give（Del give,用use） the money to help the poor or the sick.You can give the books to the local library and （add the) clothes (can be given) to the people who need them in a week.Some food and drinks can be thrown away after 24 hours.Also you should set up a special telephone line for “Lost and Found”.So if passengers noticed that they might have lost something important (like passports) on (del on,用in） your planes,they were to （del were to,用 can）call back to inquire.
I hope my ideas(del ideas,用sugestion) can help you!(Del help you,用can be helpful)
Sincerely yours,
Sandy