Dear (recipient's name),
I love your idea to have all product demonstrations at the front of the store. This is an excellent idea and one that I think all of our guests will enjoy. Thank you for taking the time to share your idea with us. We appreciate comments and suggestions from all of our guests.
Deciding which part of the store to have product demonstrations has always been a struggle for us. We look forward to seeing how this new process will help our customers.
Sincerely,
(your name)