interpersonal:connected with relationships between people 人际关系的;人际的
interpersonal skills 人际交往技巧
punctual:happening or doing something at the arranged or correct time; not late 按时的;准时的;守时的
She has been reliable and punctual. 她一直可靠守时.
a punctual start at 9 o'clock 9 点整开始