My dear ————,
It was so splendid of you to assist my friend, ————. I would like to reciprocate, and trust that if you have occasion to need my services at any time, in behalf of any of your friends, you will not hesitate to call upon me.
Very sincerely,
(For gifts)
My dear ————,
No words can quite express my gratitude to you for the beautiful gift. I feel deeply indebted to you, and take this first opportunity to thank you.
Cordially,
My dear ————,
I am deeply indebted to you for your favor received to-day. It is a great pleasure to be remembered thus by one’s friends. I thank you gratefully for it.