Dear Sir or Madam, Please kindly accept my apologies for not being able to participate in ILTM due to my work arrangements.And I sincerely hope that I have the opportunity to be present at the next event. Thank you for your understanding. Best regards, John Doe
we have not seen for a few weeks. A few days ago, I held a party in my house. There were a lot of friends coming to the party. We played games, sang popular songs and had a big meal. But I felt unhappy during the party, for I failed to invite my best friend, you. I write this letter to get your forgiveness for my mistake. I know you are fairly broad-minded. To show my sincerity, I will have another party for you. It will be pleasant to invite you here.