Hello

잘 주무셨어요?

Did you sleep well? (Formal older)

잘 잤어?

Did you sleep well? (informal)

좋은 아침입니다

Good morning (formal)

좋은 아침

Good morning (informal)

좋은 아침이에요

Good morning 2 (formal)

안녕히 주무세요

Good night (formal)

수고하세요

Goodbye (to someone working)

안녕하세요

Hello (formal)

안녕하십니까

Hello (very formal)

어떻게 지내십니까?

How is it going?

또 뵙겠습니다

See you later (formal)

여보세요

hello (on the phone)

또 만납시다

see you again