It is with a grateful heart that I extend my thanks to you.
Thank you very much for returning my lost bag to me. Thank you for your honesty and your efforts in doing the right thing.
With your diligence, I was able to retrieve important documents that are essential in my business dealings.
No amount can compensate the goodness of your heart but I hope you will accept this token of appreciation.
May you continue to do your good works. God bless.