___________ (Recipient’s Details),
Date: __/__/____ (date)
Subject: rescheduling appointment
Respected Sir/ Madam,
I am writing this letter in reference to the appointment that was scheduled for __/__/____ (date) in the name of _________ (mention name). The appointment was booked on __/__/____ (date) and the booking ID for the same is __________ (mention booking ID).
It is to request you to kindly reschedule the same and book it for __/__/____ (date). The reason being __________ (mention reason).
I believe you would consider this letter as a genuine request. I look forward to your quick and kind response. In case of any queries, you may contact me at the contact details mentioned below.
___________ (contact number)