Hi!! I'm a cis female server at a restaurant where all kinds of people come in. When taking orders and serving people, I'll often call them ma'am, sir, ladies, gentlemen, etc. to be polite and formal and junk. My question is, is there some sort of formal term that I can use for nb/fluid people or those I feel uncomfortable trying to identify (which I probably shouldn't anyway, tbh). P.S. Preferably something that won't freak out conservative older people. Lol.