How to ask your Boss for a salary increase..?

One day an employee sends a letter to Her boss asking for an increase in her salary !!!

Dear Bo$$
In thi$ life, we all need $ome thing$ mo$t de $perately. I think you $hould be under $tanding of the need$ of your worker$ who have given $ o much $upport including $weat and $ervice to your company .

I am $ure you will gue $$ what I mean and re$pond $oon.

$incerely Your$,