Dear Mr. Tong,
It is to thank you from the bottom of my heart for giving so favorable a reference and recommendation in support of my application for the post of a Chief Executive at ABC Insurance Corpn. Ltd.
I hereby express my deep gratitude and appreciation for the generous help you gave in getting me this core post in such a large organization. Your help and guidance have always inspired me to do my utmost best.
I once again express my thanks and gratitude for the reference you provided for me.