answer: Ben comes to the Friends of the Environment office to get some information for his project. #Person1# suggests Ben to work on water pollution.
documents: #Person1#: Hi, this is the Friends of the Environment office, isn't it?
  #Person2#: Yes, it is.
  #Person1#: Oh, good. My name is Ben. I'm doing a project at school about the environment. And my teacher said, this would be a good place to get some information.
  #Person2#: Well, I'd be glad to help however I can. What's your project about, exactly?
  #Person1#: Well, I haven't quite figured that out, yet. That's kind of why I'm here, actually.
  #Person2#: I see, um, do you know much about the greenhouse effect?
  #Person1#: Yeah, but I think a lot of people are already doing that topic.
  #Person2#: Well, how about water pollution?
  #Person1#: Yes, I've heard that it is a serious problem. Do you have any information about it?
  #Person2#: I think we have several books over there.
  #Person1#: Thanks a lot.