"Dear Zenek Piersa,
First of all I wanted to thank you for the work that you just did at my home. My wife loves the deck and is spending lots of time enjoying this summer on the deck. I was really impress with the quality of work and finishing the project within the time frame that we specified. I will keep you in mind for all of my future house projects that we might plan on doing.
On another note, I will continue to refer your name out to all of my clients. You have been very professional in accommodating all of there needs in the past. Once again thank you and I look forward to working with you in the future. Have a great day! "