[KyleGoetz]

You didn't answer my questions. I can't help you. Your question is like asking "when someone is going on vacation, I need the definitive thing to say to them as they leave." Depending on context, it could be good riddance, bon voyage, have a safe trip, see you in a few years, adios, adieu, sayonara, byebye, i'll miss you, i love you!, etc.

Reread my previous post and answer the questions.

To further explicate, if this is Mrs. Kitty telling Mr. Kitty to come home when she races to the bar and finds him totally drunk, she might say あなた、帰ってください or something. If it's the owner of a cat named Mr. Kitty sticking her head out the window and calling for him, she might say ミスターキッティー、帰って！