Because the company has changed the date of the dealer meeting many times, it is necessary to cancel it completely now. I don't know how to find a reason to write an apology letter.

1 First of all, the title is Apology Letter.

Write the other person's name first, then your name, and then state the purpose and purpose of your letter. It's best to write the whole story clearly, then apologize, and finally state your regret and sincerity to make up for it.

Last signature, time name.

It's not difficult. The key is sincerity.