Dear Ms. Smith,
Thank you for your generous check for my graduation. It was much appreciated. I will put the money toward school books next year.
It was nice seeing you at the company barbecue in April. It seems you are still one of the best softball players at the company. I’m sure Dad was lucky to be on your team.
Sincerely,
Your name. Include your last name if there’s a possibility of confusion. Your parents can tell you if it is necessary.
