To,
The Headmistress,
ABC High School,
Hyderi,
Karachi
SUBJECT: REQUEST TO GRANT LEAVE TO ATTEND MARRIAGE CEREMONY.

Respected Madam,
I am writing to inform you that marriage of my cousin is going to be solemnized on 11th September 1998 at Hyderabad.
My parents and other relatives are leaving for Hyderabad on 6th September, 1998 to attend the marriage.
Therefore Madam, I would request you to grant me leave of absence from 6th September, 1998 till 12th September, 1998 of the same month so that I can join the happy celebrations in traditional style.
Thanking You for act of kindness in this regard.
Your's Obediently,
X-Y-Z.