How do you write application to school principal for having a sports day in school?

To,

The Headmaster,

Govt. Primary School,

City A.B.C.

Sir,

with due respect i beg to say that all schools are having sports day only our school is not holding sports day. So, please held our sports day. I will be thankful to you.

Thanking You,

Yours obediently,

X.Y.Z.