1234 Archer Road
Gainesville, Fl 32607
[Subject: Normally bold, summarizes the intention of the letter] -Optional-
Dear Justin Holloway,
I would like to take this opportunity to thank you on behalf of the whole group for the inspiring speech you gave to us last night. It was obvious that you are extremely knowledgeable in your own field, and can link this knowledge up to a great presenting style. This saw everyone captivated by the talk. I find that the whole area of your expertise is truly fascinating and would ask that you consider a repeat performance at some future date. You are welcome at our group whenever your schedule allows.