Take the chance
Sometimes, to make more money, airlines overbook flights. It’s disheartening to hear this when you are about to board your flight. In this case, they ask for volunteers to skip the flight so other passengers get a seat. Your first instinct is to not give your seat up.
But don’t sweat it; airlines will reward you with benefits for your giving up your seat. Having an extra vacation day, with meals or even hotel rooms charged to the airline, isn’t that bad of a deal. You’ll still go on your trip, just a day or so later.