Korean phrase
이미 체크인했어요. i mi che keu in hae sseo yo
Meaning
I've already checked in
When to use it
It means the speaker has already completed check-in. It is a brief, polite way to say that no further help with check-in is needed.
Example dialogue
줄 서지 마. 내가 대신 해줄게. chul seo ji ma nae ga tae sin hae jul kke
Don't stand in line. I'll do it for you.
아니, 이미 체크인했어요. a ni i mi che keu in hae sseo yo
No, I've already checked in.