[Expression] Think nothing of it / What are neighbors for?

A: Thanks for delivering that message for me.
B: Think nothing of it. It was no trouble at all.
A: 메모 전해 줘서 고마워요.
B: 천만에요. 별일 아닌걸요.

A: I really appreciate your letting me stay with you.
B: Think nothing of it. My house is your house.
A: 이곳에 머물 수 있게 해줘서 고마워요.
B: 부담 갖지 마세요. 저희 집이 당신 집인걸요.

Don’t give it another thought.
= Don’t give it second thought. = Forget it.

A: Thanks so much for taking care of my house while we’re out.
B: Don’t mention it. What are neighbors for?
A: 집을 봐주셔서 고맙습니다.
B: 뭘요. 이웃 좋다는 게 뭡니까?
What are friends for?
친구 좋다는 게 뭐니?