“Dear Mike:

I really appreciated doing business with you and your company.

First, you were very prompt in coming out to the house and giving me a bid on replacing the concrete sections on my driveway.

Then, you came out really fast and did the job with dispatch. Your crew was very professional, very courteous and did a really nice job.

I would certainly recommend your company for concrete work and if I ever need more around my house I will certainly give you a call.

Thank you for much for your help.