1, if it's a friend's dinner. Well, that's easy to say. No one can hear you two anyway. She said that the company has something urgent to deal with and it will be handed in tomorrow. My colleague asked me to come over. Sorry, let's get together again sometime.
2. If it is a company dinner. There are many answers. Just say that a friend I haven't seen for years is here on business. I just remembered that he has arrived in XXX. If I want to answer it, I will go first. Or ... the old people at home are coming to visit and need to go back and look after something.
I hope I can help you, and I hope to adopt it!