I would like to request a leave of absence on 5th July, Wednesday.
I have been suffering from lower back pain since last month. My doctor advised me to take a health check on that day, so as to find out the reason.
I would be available by phone during the leave, so that you can contact me for any enquiries.
I sincerely apologize for any inconvenience caused due to my absence. I would be very grateful for your consideration. I am looking forward to your reply.