Thank You for Your Patronage!
Dear Ms. Morrison:
I just wanted you to know that we truly enjoy working with you and feel honored to be your chosen (type of business) ex. (dry cleaner).
Your business is much appreciated, and we will do our very best to continue to meet your (type of service) needs.
Your continued patronage and suggestions are a vital part of our growth. And for that, we are most grateful.
Thanks again! We look forward to serving you for many years to come.
Best regards,