Link task and calendar

Hi,

 Someone just booked my calendar. I need to prepare for this meeting 2 days in advance. So I'll create a tast 2 days ahead of the booking. But - what if the meeting is moved? I would like for my task to move automatically so it's 2 days ahead of the new meeting date.

 Can I make this link (dependency) between a booking from someone else, and a task that I create myself?

 Thanks