It's good to honor the promises you made to someone.
Andrew is busy at work but promised his daughter Rachel that he would take her out to dinner if she graduated, and she has graduated.
Andrew wants to talk to his daughter about what he said.
Andrew tells Rachel to pick a restaurant to go to since she has graduated.
Andrew says that he's too busy at work to take Rachel out for her graduation dinner.
Rachel will feel happy that Andrew is honoring his promise to take her out for graduating.
Rachel will feel betrayed by Andrew and feel he is unreliable.