I'd say that depends on who you're writing to...
Assuming it's work related, here's how I'll do it. However, it depends on the nature of your relationship with your boss and how the company's run.
------Boss' title,Company's nameCompany's Address
Dear Sir/ Madam,
A Letter Requesting Leave to Attend University Conference in (where?)
I, YOUR NAME, hereby write to request a (how many days, 2, 5?) leave in order to attend the upcoming conference at the University of (NAME OF UNI) from (WHEN?) to (WHEN?)...
An opportunity to attend this event will allow me to gain... (WHAT'S IN IT FOR YOUR AND/ OR YOUR COMPANY?).
I hope my request will be granted in due time.
Sincerely yours,
YOUR NAME------
I hope this helps...
For more information, check this out: How to write business letters
Assuming it's work related, here's how I'll do it. However, it depends on the nature of your relationship with your boss and how the company's run.
------Boss' title,Company's nameCompany's Address
Dear Sir/ Madam,
A Letter Requesting Leave to Attend University Conference in (where?)
I, YOUR NAME, hereby write to request a (how many days, 2, 5?) leave in order to attend the upcoming conference at the University of (NAME OF UNI) from (WHEN?) to (WHEN?)...
An opportunity to attend this event will allow me to gain... (WHAT'S IN IT FOR YOUR AND/ OR YOUR COMPANY?).
I hope my request will be granted in due time.
Sincerely yours,
YOUR NAME------
I hope this helps...
For more information, check this out: How to write business letters