It's wrong to stand people up.
Lance has agreed to have dinner with his friend, Liz, but is having second thoughts about it.
Lance wants to skip dinner with Liz.
Lance tells Liz that he can't make their scheduled dinner.
On the night of their dinner, Lance stays home without informing Liz of his plans.
Liz accepts Lance's cancellation and makes new plans with someone else.
Liz waits at the restaurant for hours, wondering where Lance is.