A simple and courteous acknowledgment of pleasure in a new acquaintance. Suitable responses are evidently various depending on the parties concerned and their likely relations. Squee makes it clear such pleasure was mutual, if not magnified. I think not less than politely denies the assertion, Never again withdraws with courtesy, and Never again decidedly without. And so it begins... indicates a promising friendship has been established, while colleagues or the more reserved may prefer a non-committal See you soon. You've gotta be kidding me or If only doubt the veracity of the Bearer’s statement, while Unsure or Please suggests a teasing doubt and Drink? one way of furthering the acquaintance. About time suggests the meeting has been long overdue, whilst in exceptional circumstances matters may take a romantic or even passionate turn with You're cute or Kiss me, you fool!.