下午好，我是杨文恺，我能和马克通电话吗。
B: He's out on his lunch break right now. Would you like to leave a message?
他现在在午休，你要留言吗?
A: Could you ask him to call me back at 87304450?
他回来后请让他给我打电话，号码是87304450.
B: OK, I'll tell him when he comes back.
好的，他回来后我会转告他的。
A: Hello. May I speak to Mr. Brown?
您好，布朗先生在吗?
B: I'm sorry, he is not in now. Would you like to leave a message?
对不起，他现在不在。您想留言吗?
A: Will you ask him to call me back later?
你能告诉他待会儿给我打电话吗?
B: I'll let him know.
我会转告他的。