Yes? I’ve done that tons of times when I get to a restaurant and it turns out to be crowded I’ll call whoever I’m meeting and work out an alternative.
With less than 15 minutes ago, when they may already have been pulling into a parking garage?
I’m not saying it’s impossible, but I’m just speaking towards how much time was left until the appointment time, hard to handle changes on the fly with so little time left. Not impossible, but hard.