It's good to reschedule things if you have other plans.
Cam has to go to his son's recital, but his friends just invited him to a pick-up basketball game.
Cam wants to play basketball with his friends.
Cam tells his friends to reschedule the game to another time so that he can come.
Cam skips his son's recital in order to go play basketball.
Cam's son is happy that his dad came to his recital.
Cam's son's feelings are hurt, and he feels less close to his dad.