How long will the man be away?

W: Simon, you look worried. What’ s wrong with you?
M: I’ m all right. But its my son, Roger.
W: What has happened to him? Can I do something for you?
M: Well, I’ m going to New York in three days. And my wife in London, and she will not return until the end of the month.
W: Oh, I see. You want someone to take care of Roger, don’t you?
M: Yes. But it’ s hard work. He is too naughty.
W: Please don’t worry. I’ll look after him during your stay in New York.
M: I’ll be away for nearly a week. I think there will be too much trouble for you.
W: It doesn’t matter. You see, I was a teacher before I retired. I like children very much.
M: Thank you very much.