书信一、写信目的：道歉信 (承认错误、表示歉意、请求原谅、寻求解决方案)
I’m so sorry I missed our appointment for this morning; I got held up in a faculty meeting and could not break away.
Please call me to reschedule. I am available any weekday except Friday from 2 to 4 P.M., and because I missed our meeting I also am willing to drop by the office any time Saturday if that works better for you.
My apologies.
