Dear Mr. Zhang,
My family and I are very happy to receive the notice from attorney, who is working on my NIW case, that my case was approved. It is even out of my expectation that my case will be approved in only one and half month. I attribute half of the success to my attorney. He is very professional. Thank you for assigning my case to an experienced attorney. Because of his excellent work, I recommended my friend, XXX, to contact you one month ago (that is before my case approval). He is in process of his NIW case by your office right now.