DAVID HARRIS
609 West Main Street
Albuquerque New Mexico, 87109
[Subject: Normally bold, summarizes the intention of the letter] -Optional-
Dear David harris,
Thank you for your continued kindness in walking the Cooper’s dog. I had promised that I would look after their dog during their vacation, and a broken leg certainly makes that difficult. Whenever you need a favor please do not hesitate to call me. I do not know what I would do without your friendship.
Sincerely,
Taro