X：I'm afraid I've got to go. I have another appointment at five.
恐怕我必须得走了，我在5点钟有另一个约会。
Y：Do you? By the way, could you mail this letter for me as you go through the lobby?
是吗?对了，你经过大厅时顺便帮我寄这封信好吗?
X：No problem.
没问题。
Y：Thank you. Come back to my office at the same time tomorrow. I'll have the pictures ready by then.
谢谢。明天同一时间请到我房间来，那时我会把相片准备好。
X：I will.
我会的。