假設(shè)你是李華，于2016年6月3日搭乘國外某航空公司航班（flight number BA793）回國后，發(fā)現(xiàn)遺失了一個(gè)行李箱（suitcase）．現(xiàn)請用英文給該航空公司寫一封信，請他們幫你尋找．
信件要點(diǎn)包括：
1．陳述寫信原因
2．簡要描述該行李
3．說明其重要性
4．期待回復(fù)并表示感謝
注意：
1．詞數(shù)100左右．
2．信件格式已為你給出．
3．請?jiān)诖痤}卡上作答．
Dear Sir or Madam，

I'm Li Hua，a passenger on the flight number BA793 of your airline company．I took the flight from the abroad on June 3，2016．Unfortunately，I found one of my suitcases lost at the airport．Here I am eagerly writing to you for help to find my lost suitcase．
The suitcase is a black mid-sized one，80 cm long，40 cm wide and 25 cm thick，with my name tagged on the handle．Because it contains many important personal files and some scientific material and some academic reference books collected when I studied abroad for further research in my field．It took me much time and energy to get them and they are valuable in my scientific study．Besides，there are some presents I bought for my family members and friends，it will be a great disappointment to me if I can't find the suitcase．
Here I sincerely express my appreciation if you could help find the lost suitcase，and I'm looking forward to bearing good news from you．

I'm Li Hua，a passenger on the flight number BA793 of your airline company．I took the flight from the abroad on June 3，2016．Unfortunately，I found one of my suitcases lost at the airport．Here I am eagerly writing to you for help to find my lost suitcase．
The suitcase is a black mid-sized one，80 cm long，40 cm wide and 25 cm thick，with my name tagged on the handle．Because it contains many important personal files and some scientific material and some academic reference books collected when I studied abroad for further research in my field．It took me much time and energy to get them and they are valuable in my scientific study．Besides，there are some presents I bought for my family members and friends，it will be a great disappointment to me if I can't find the suitcase．
Here I sincerely express my appreciation if you could help find the lost suitcase，and I'm looking forward to bearing good news from you．

Yours truly，
Li Hua