answer: #Person1# and #Person2# have seen before. #Person2# tells #Person1# #Person2#'s here to improve English. #Person1# thinks #Person2#'s English is good.
documents: #Person1#: Lovely weather!
  #Person2#: Yes, it's really warm.
  #Person1#: I've seen you before, haven't I?
  #Person2#: Well, you may have. I've been here once or twice, for a walk in this quiet park. Do you live near here?
  #Person1#: Yes. I live in one of those flats over there. What about you?
  #Person2#: Oh, I'm staying with a family down near the station.
  #Person1#: Are you on holiday?
  #Person2#: Well...er...I'm here to improve my English. I'm from Greece, you see.
  #Person1#: I didn't think you were English, but your English is very good.
  #Person2#: Thank you very much.