It's expected that you won't cancel plans.
Carrie asked her friend Beth to go out to a concert tonight, but her boyfriend Nick just got back into town and wants to catch a movie with her.
Carrie wants to choose who to hang out with.
Carrie tells Nick about the concert she planned to see with Beth and invites him along.
Carrie sends Beth a text saying that Nick just got back home and won't be able to go see the concert with her.
Beth is happy to have an extra person see the show with her and has a good time.
Beth feels unimportant to Carrie and decides not to make any future plans with her.