How to write a letter to principal for 10 days leave?

To,

The Principal,

Mahbert High School

Dear Madam,

With due respect I beg the state that I am Akash Kapoor, a student of 7th c standard asking a week leave to attend aling brother in Kolkata. I along with my parents will be out of station.

Therefore, I kindly request you grant me leave.

Yours faithfully,

Sincerly

Akash Kapoor

Class-7c Roll no.15