Dear …
Thank you for your kind letter depicting the positive experience you recently had with our employee_, __(Name)__. We greatly appreciate it when a customer takes the time to write a letter, giving us positive feedback about their experience with our organization. These comments are always passed along to the employee(s) involved.
A copy of your letter has also been sent to our Human Resources department to be kept on permanent record in the employee’s file. Again, on behalf of our organization, we extend our thanks to you.
Sincerely,