[Your letterhead, if desired; if not, your return address]

[Date of letter-month, day, and year]

[Recipient's first and last names]
[Company name]
[Street or P.O. box address]
[City, State ZIP code]

Dear [recipient's name]:

It was a great honor to have you speak at our annual banquet and fundraiser on Friday evening. Thank you for taking the time to do this. I have received many favorable remarks about your speech and the style in which you delivered the information. I hope we can arrange to have you speak at another event in the near future.

Thanks again for providing such a compelling and informative speech. We will talk with you again soon.

Best regards,

[Signature]

[Sender's first and last names]