Respuesta :

Hello:

여보세요

yeoboseyo

Goodbye:

안녕

annyeong

SoftSuga
안녕하세요: can be used as hello and bye
여보세요: when you are saying hello over the phone
안녕히 가세요: when you are staying but the other person is leaving
안녕히 계세요: when the other person is staying but you are leaving