I'm very sorry to let you know I'll be unable to keep our appointment this Friday for our business talk as my manager asked me to go to Beijing to deal with an urgent matter and won't back until next Monday.
May I postpone our appointment to next week after I come back from the business trip.
My apologies for any inconvenience this may cause you, Mr. Smith.
I'll be looking forward to your early reply.
I am so very sorry for how I spoke to you the other day. What I said was insensitive and hurtful. I was angry but still I have no right to take it out on you. You don’t deserve that kind of behavior from me and I know better than to act that way.
You have every right to be hurt and upset with me, I would be if I were your place. I promise I am working on controlling my outbursts when I get angry. We’ve been friends for so long, I can’t imagine going through life without you to share its ups and downs.
I know you probably don’t trust me right now, but I will work very hard to regain that trust. Even though it may take a while before you do. I miss spending time with you and all the conversations we had.Will find it in your heart to please forgive me? Your Friend, Me