Don't bother answering. It's a scam. I went along with it just to annoy the man but basically they tell you you are getting a free cruise all you do is pay the state taxes for each person and they have to be paid right then. He tries to reassure you that it's not a scam because he gives you his contact information.
Answered and the guy said "congratulations on your cruise how are you today" and I asked how he was doing. He said thank you for asking and then said "are you over 21" and I said no. Then he replied with "oh okay I'm gonna have to let you go" and he immediately hung up on me.