Dear Mr. George,

I am truly embarrassed at having to make this apology. There is no excuse for failing to keep my appointment with you last Thursday to discuss estate planning options with you and JoAnne.

This mistake was entirely mine as I marked you in the wrong date on my calendar. I hope you will forgive this error and reschedule our meeting at your earliest convenience. I guaranty that this will not happen a second time, and I will call you early next week to see if we can set a revised date.

Again, please accept my apology. I look forward to meeting as soon as possible.