I had this high value client that came in with a negative attitude like he was better than everyone else at exactly 4.56pm when we closed at 5pm one day. Wanting to get things done, I had to explain to him that since it's after 4 o'clock and the market was closed that his transactions would not be processed until the following business day. Needless to say, he was not happy with my response but accepted it. He later became one of my favorite clients and ended up only wanting to work with me to handle his requests.