1234 Archer Road
Gainesville, Fl 32607,
[Subject: Normally bold, summarizes the intention of the letter] -Optional-
Dear JUSTIN HOLLOWAY,
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.