给老外写道歉信怎么写

回答和翻译如下 ：

Best regard

Name

Dear XXX,

(空2格） It is my great honor to be invited to your party.……百(说明是度什么事件）I‘专m really grateful for this opportunity to attend it. ……(夸奖的话）But unfortunately, I will have a significant meeting that day which has been planned several weeks before……（属说明原因）I'm awfully sorry and I beg your parden. Anyway, I wish your party would be successful at utmost.

Yours,
Sincerely