answer: #Person1# wants to see a flat with 4 bedrooms but it's on the top floor. Mr. White suggests one with 2 bedrooms on the second floor. #Person1# agrees.
documents: #Person1#: Do you still have 4 flats with 3 bedrooms Mr. white?
  #Person2#: No madam, we only have one now, it's on the top floor. Shall we go and see it?
  #Person1#: Well, I don't like climbing many stairs when there is a power cut.
  #Person2#: How many people are there in your family?
  #Person1#: Four, my husband and our two daughters.
  #Person2#: Then you can buy one with 2 bedrooms. There are still several of them available. You can buy one on the second floor. You and your husband live in one bedroom and your daughters share the other.
  #Person1#: That sounds like a good idea. Show me one of them on the second floor, please.