2365 S Mayfield Ave
Chicago, IL 60652
[Subject: Normally bold, summarizes the intention of the letter] -Optional-
Dear HENNERY SMITH,
I want to write and thank you for picking up Rachel from school. I know it was at very short notice and realize that good friends like yourself are not easy to come by. Collecting and looking after my daughter meant that I could get to the doctor’s before the weekend. It proved not to be serious although I have some tablets to take.
I feel blessed that we became friends and you and your family mean more to me then I can possible say. Whenever you need a helping hand please give me a call, I would like to return the favor you gave me.