This part is to test your ability to do practical writing. You are required to write an ad

This part is to test your ability to do practical writing. You are required to write an advertisement according to the following instructions given in Chinese.

说明：为你的上司David Jones总经理写一封致歉信给Smith Hubert先生，日期为2008年3月18日。内容如下：

你非常抱歉，无法赴周一的约会。因要到天津开会，周末才能返回。你一回来就会给他的秘书打电话，另行安排会面时间。给他带来诸多不便，深表歉意。

请帮忙给出正确答案和分析，谢谢！