2--Yes, I spent so much time sightseeing here. It is already so late now. I am afraid I can't catch the last bus back to downtown.

1--Don't worry. I will try to get a taxi for you. You can take it to the bus station.

2--I am very grateful to your help.

1--Don't mention it. It is my duty.

2--Thanks again.

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注解：
 
1.sightseeing观光 
2.grateful感激的      
3.duty职责  

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译文：

1--女士，下午好。有什么能帮忙的？

2--是的，我在这儿观光的时间太长了。现在已经这么晚了。恐怕我赶不上回城里的末班车了。

1--别担心。我会尽力给你打个车。你可以坐出租去公车站。

2--非常感激你的帮忙。

1--不客气。这是我的职责。

2--再次感谢您。