A:You're kidding. That's the silliest thing I ever heard.
C:我当时也是这么想,但是没敢直说,只是说谁主动跟别人打招呼跟先来后到没关系。
A:You are absolutely right. No one should wait for anyone else to speak first, smile first or even make eye contact before acknowledging the other person.
A:You were right to discuss it with her. You don't have to be best friends with all the people you work with, but you should treat each one of them with courtesy and respect.