I'm so sorry I was late to our lunch appointment. I know you are on a tight schedule and my being late made it difficult for you to get back to the office on time. I really am sorry and hope that you can forgive me. Let's get together again next week. This time, it' s...
Dear (recipient's name),
I'm so sorry I was late to our lunch appointment. I know you are on a tight schedule and my being late made it difficult for you to get back to the office on time. I really am sorry and hope that you can forgive me. Let's get together again next week. This time, it' s my treat.
Sincerely,
(your name)