Dear Tom Smith,
This letter is sent to inform you of an employee that should be commended for his conscientious work performance, knowledge, and ethic standing, he showed on a service call to our home three weeks ago.
Although this letter is a little late, we felt it necessary to comment on Chris Anton fixing our A/C unit in our garage.
I would highly value this employee as a good example of great customer satisfaction to your customers.
Cindy and John B.