please how do i respond to this letter and to whom do i address it to

I write to inform you that you have been nominated by your department and the faculty to attend the Faculty Postgraduate retreat scheduled to hold on 20th April 2014 at the XYZ conference hall.
Please note that your attendance at this workshop is compulsory and directly related to your studentship in your department.
Kindly acknowledge the receipt and confirm your attendance of this Faculty retreat.
Thank you.

Faculty Officer
For Dean