您好,以下是原创示例,供您参考:
Dear Manager Williams,
Thank you for your invitation for attending your company's 5th anniversary celebration. Unfortunately, urgent matters that I will be on business in another city. Hope you understand the reasons preventing my attendance.
Thank you for the invitation again and hop our long-term cooperation go smoothly and closely.
Yours Sincerely,
xxx
回复商业邀请重在简单明了,言语严谨。一句话解释为什么不能塌笑谈去,最后团碰或升如者祝福活动顺利或者祝福合作愉快。落款yours sincerely, 标准名字即可。
希望有所帮助,谢谢!