Respected Sir/Madam,
I am ____________ (name) and I work as ___________ (designation) in your reputed company. I have been working for last ________ (duration) and my employee ID number is _________ (mention employee ID number).
I am writing this email with the utmost respect in order to request you to kindly provide me with a half-day leave for __/__/_____ (date). Respected, the reason behind the same is ___________ (mention reason).
I shall be highly obliged for your kind support. In case of any query, you can contact me at ____________ (contact number).
Yours faithfully,
____________ (Name),
____________ (Employee ID)