I am not free

I picked up a day planner from the bookstore today because I have a sense that I will have things to do soon. Currently, nothing is written in my day planner, but that doesn't mean I am free.

I am definitely not free on Saturday, February 11th because, in my planner, there is no Saturday, February 11th. On the next page, there's no Wednesday, February 15th; I won't be making appointments or taking meetings that day, either. The same goes for February 29th.

The day planner was free--of charge, anyway--because there are a few days missing, torn out by some thoughtful customer.

I am not free. Not on those days, and not on any others.