Dear John,

I want to take this occasion to express my appreciation for all your hard work on my behalf over the last 7 years.  As you know when we began working on our first transaction at Siemens, I was very appreciative of your efforts to help us move into the Blinder Building.  Your effort in finding an excellent location for our business and helping to negotiate tenant finish was very valuable to me.

More recently, when I opened my own business you were instrumental in finding us excellent Class A space at below market pricing.  And your diligence in working the negotiation to our best advantage has certainly helped us get off to a fast start.

John, thanks once again, and I certainly would recommend your services to any company, as you are the hardest working real estate professional who represents tenants that I have ever met.