What is the conversation mainly about?

W: Did you know that the Lithuanian Ballet is performing in town this week? I read an article about them in the newspaper yesterday.
M: No, I didn’t. But I’ve heard that they’re quite spectacular.
W: I’m organizing a group from the office to go tonight, so that we can get 25 percent off the regular price. Do you want to come with us?
M: I wish I could go with you, but I have to work overtime tonight. I have a big presentation to give to some of our foreign investors in the morning, but I hope you enjoy yourselves.