Simply replace the unfilled areas such as "" and "[date]" with your information.
Dear Valued Customer:
In an attempt to provide you with more efficient, quality service, we are conducting a short survey. The survey, as well as a postage paid return envelope, is enclosed. We hope that you will take a few minutes to provide us with information on how we can improve our services.
We have attempted to make the survey as short and concise as possible to avoid inconveniencing you. Any feedback that you provide will be greatly appreciated, and all feedback can be completed anonymously.
Thank you in advance for taking the time to make us a better service provider!