Write a letter to your friend telling them not be able to attend their marriage ceremony due to some prior commitment (You are Mahesh/Renu and you live in Preet Vihar of Delhi.)
December 13, 2021
100/1, MNO Road,
It has been a truth universally acknowledged, that a friend out of sight is a friend out of mind, but never do we. Advent of this month, I received the kind invitation of your wedding ceremony on 20th; but I heartily regret, it will not be possible for me to attend it on the auspicious eve owing to an important international collaboration in my office, unfortunately, scheduled on that evening. And I pinky promise I won’t miss paying a visit to you the time I visit home on 25th instant. I pay homage to your invitation. I hope you will not take my inability amiss. Best wishes on this wonderful journey, as you build your new lives together. Stay safe and secure on days ahead.
I do hope your ceremony is a success.