Don't I know you? 我不是认识你吗?
Have you two met before? 你们俩见过面吗? Sorry, I didn't catch your name. 抱歉, 我刚才没听清楚你的大名.
May I have your name please? 请问你尊姓大名? It's a privilege to meet you, sir. 先生, 能见到你是我的荣幸. A:Pleased to meet you, Mr. Conway. 幸会,康威先生.
B:Likewise. 彼此, 彼此. Meet my old lady. 来见见内人.