Simply replace the unfilled areas such as "" and "[date]" with your information.
I want to wish you congratulations in your new position as [title of position]! We have seen you try your best and it has paid off. Keep up the good work! I'm sure that you must be happy to be working in a familiar line of work. We will miss your smiling face, cheerful personality and most of all your willingness to help with any problem.
Please stop by when you are in town. We don't want to forget you!