情景：一位外国客人乘出租汽车去机场，下车时将一个皮包忘在了车上。 任务：写一份寻找失主的广播启事，内容包括： (1)所发生的事； (2)希望找到失主； (3)如何联系。 请用下面的格式。 Attention, please. Thanks!

[A] Because the prices of goods (物价) were very high.
B. Because the post office wanted to earn too much money.
C. Because many people had to be paid for getting the postage.