text: Yolanda: How can I get to Tom's place?
  Isa: You can take the subway. 
  Isa: Then you need to walk for about 20 minutes. 
  Helen: Which is the station?
  Isa: Alonso Penha. 
  Isa: Why don't we meet at the station and walk together?
  Isa: His house is not that easy to find. 
  Helen: Great idea!
  Yolanda: Yes!
  Yolanda: What time should we meet?
  Isa: The party starts at 9.
  Isa: Maybe we can meet there at 8:30-8:40?
  Helen: Ok
  Yolanda: See you later! 
target: Yolanda, Isa and Helen will walk together to find Tom's house. The party starts at 9. They will meet at 8:30-8:40 at the Alonso Penha station.