Mr . Lee , I was wondering if you and your wife had plans for next Friday night ?   Yes , I think we might be free . What did you have in mind ?   I've mailed a formal written invitation to your home inviting you to a dinner party at my home .   That sounds great . Is it casual ?   Actually , we thought it would be fun to have a formal sit-down dinner for the holidays .   That sounds good . It will give my wife a chance to dress up .   Yes , we've invited four other couples , so it should be a good mix of people .   That sounds wonderful . Will there be anyone there that I know ?   Oh yes , everyone we are inviting is from our company . 