You have an interview next week for a job you really want, but unfortunately you will now be unable to attend.
Write a letter to the person due to interview you. In your letter,
1.inform him and apologise
2.explain the reason why you cannot come to the interview
3.offer a new day and time and express your continued desire for the job
You do NOT need to write any addresses. Begin your letter as follows:
Dear Mr. Compton,