Dear Amy,

It is truly fantastic news. I appreciate all of your great helps. By the way, should I receive the physical notice directly, or it will be mailed to you first? 

I will start to prepare I-485, and may come back to you firm for help. I am leaving tomorrow for my vacation, and will contact you after I come back. 

I will definitely recommend you to my friends if they are interested in green card application. 

Thank you again! Have a nice day!

Client