[link image to desired review site]
It was my distinct pleasure to serve you and should there ever be a need for my services again it would be my pleasure to help.
As promised I will be mailing you a [gift giveaway] in the mail and you should be receiving it over the next few days.
That being said I was hoping I could bother you for one final favor.
As you may know Social Media and Online Reviews are the life blood of my business and having customers like yourself letting others know about your experience would mean the world to me.
If you would not mind clicking on the button below which will take you to my Google Plus Page where you will the link to write a short review for me.
Thank you again, [Business Owner]
[link image to desired review site]