Dear Ed, 
Just wanted to send you a note to say how grateful I am for your expertise in fixing the problems on my laptop! I had been so worried about this, and I didn’t know what to do, as I’m not a very technical person. I’m so glad I found you, and I’ll certainly call on your services again if I have any more computer issues. 

Many thanks once again.

Lizzie H in Worcester

23rd March 2015