麻烦达人帮忙看看英语作文~i'm the chairman of the students union in xucai

i'm the chairman of the student union in xucai school.we will be holding an english speech contest,and all of us are hoping that you would give us the honor of inviting you to the contest as a judge.
the contest will be held on june 15th,at 2-5 in the afternoon.the contest will start with class 501.the winner will be selected from ten of the best students in our school.
if you have other obligations (saying "not willing to come" is rude) or have some other questions ,please feel free to call me at 44876655.
we are all looking forward to your reply.
with best wishes.
li hua