I tried to think of some useful phrases that might be useful at some point in your life.

여보세요 - (yoboseyo) hello (only used when answering the phone)

내일 만나요 - (neil manayo) see you tomorrow (literally, “meet tomorrow”)

다음에 또 봐요 - (daume ddo bayo) see you again next time

나중에 봐요 - (najunge bayo) see you later

잘 가요 - (jal kayo) take care (used when someone is about to leave)

수고했어요 - (sugo hessoyo) this one is hard to translate. It means something like, “good work” or “good job”.

조심하세요 - (joshimhaseyo) be careful

환영합니다 - (hwanyunghamnida) welcome

어서오세요 - (uhsooseyo) welcome, but in the context of a store or restaurant to a customer coming in

둘어오세요 - (duluhoseyo) “come in”, when inviting a guest over to your home

행운을 빌어요 - (hengunul beroyo) good luck

잠시만 기다리세요 - (jamshiman gidariseyo) please wait a moment

도와 주세요 - (dowa juseyo) please help me

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