Read the following conversation and answer the question.

M: I'm afraid I must be going now.

W: Must you? It's still early.

M: I'm afraid I really must. I have to meet a midnight plane.

W: In that case, we can't keep you.

M: Well, thank you very much for a pleasant evening.

W: Thank you for coming. You must come again.

M: Thank you. I will. Good-bye.

W: Good-bye. I wish you a very good journey home.

Question: Why does the man leave early? 

- Because he is too tired

- Because he is catching a flight

- Because he does not like to stay


Because he is catching a flight