- 인사: dear sir(Ms.Park)(Mr.Park) / to whom it may concern(담당자 잘 모를 때) - ~관해: regarding / Regarding this questions, we will update soon. - 기쁘다: We are glad to inform you that we could attend the meeting - 슬프다: We regret to inform you that we are not able to attend. - 죄송하다: I'm afraid I am not available tomorrow. / I apologize for the delay. - 회신을 바랍니다: I am looking forward to hearing from you. - ..