不客气bù kè qi
you're welcome, impolite, rude再见zài jiàn
goodbye, see you again later喂wèi
hello (interj., esp. on telephone)对不起duì bu qǐ
unworthy, to let down, I'm sorry请qǐng
to ask, to invite, please (do sth)谢谢xiè xie
to thank, thanks大家dà jiā
authority, everyone您nín
"you (polite, as opposed to informal 你[ni3])"欢迎huān yíng
to welcome, welcome送sòng
to deliver, to carry