Richard Anderson
1234, West 67 Street
Carlisle, MA 01741
Cell:-(123)-456 7890.
[Subject: Normally bold, summarizes the intention of the letter] -Optional-
Dear Riachard anderson,
I apologize as I will not be able to host the dinner and am withdrawing the invitation. Alan has been admitted to the hospital due to ill health. He has had a mild stroke and the doctors are not sure until the results return. We both were very excited to meeting you but I am sure you understand our problem.
In the future, we can arrange many dinners again.
Sincerely,
Wichert