I have an appointment at that time.
The public does not need to know why you are too busy.
We schedule and set up appointments for the numerous tasks busy Realtors® manage daily. We put our important dates in first, many written in stone, family, personal and settlements. Then everything else fits around your "big rocks."
It is not necessary to let the world know your schedule.
WHY you are not available is NOT their concern.
When someone "needs" an immediate appointment, it may not be possible. Many times we can make it work. Sometimes it is not possible.
No matter what is on your calendar, there is a professional way to respond to their immediate needs.
Here are a few simple responses needing no explanation.
That is not a convenient time. How about 2 or 3?
I am booked at that time.
I have back to back appointments this morning, would this afternoon or tomorrow morning work for you?
12-1 pm Sunday is not possible.
Is there another time that would be convenient?
Or just say:
Already have an appointment at that time.