A : Can't you stay a little longer?
    -조금 더 있다 가면 안될까요?

B : It's late. I must be going.
   -늦었어요. 이제 돌아가야 해요

A : But It's still seven in the evening
    -아직 저녁 일곱시밖에 안되었는데요

B : I'm a bit tired.
    -좀 피곤해서요.