"Robert Henry" wrote in message

Here is some boilerplate to facilitate communication of such. I think it can
be permutated into notice of cessation for other business activities pretty
quickly.

Unfortunately, I am unable attend the [event]; it is being held in the City
of Chicago.

And if you can't quite remember all of the events that you had planned
to attend but now must decline, here's a list:

http://www.chicago.il.org/smi/calendar.cfm