I hate to do this at such late noti

I hate to do this at such late notice, but I'm afraid that I have to cancel my plans to attend {meeting/trip/event}. I am so sorry for any inconvenience this causes you and any changes that it necessitates in your current plans.

I would never do something like this so last minute, but unfortunately {reason for cancellation}. I hope you understand that I never saw this emergency coming and was completely unprepared for it.

Thank you for your understanding in the matter and I hope you have a wonderful time at {event}.

Sincerely,

Results (Swahili) 1:

i hate kufanya hili kama marehemu taarifa, lakini mimi nina hofu kwamba i na kufuta mipango yangu kuhudhuria mkutano {/ safari / tukio}. i ni hivyo pole kwa usumbufu wowote hukufurahisha na mabadiliko yoyote ambayo ni haja ya katika mipango yako ya sasa.
i kamwe kufanya kitu kama dakika hii ili mwisho, lakini kwa bahati mbaya {sababu kwa kufuta}.i hope kuelewa kwamba i kamwe kuona dharura hii kuja na mara hawajajiandaa kabisa kwa ajili yake.
kuwashukuru kwa uelewa wako katika suala hilo na i hope na wakati ajabu katika {tukio}.
dhati,