text: Tony: Are you in the city centre?
  Mary: Yes, why?
  Tony: the underground's not working, I'm trying to get back home
  Austin: I can pick you up, if you're not too far
  Tony: I'm not far from the Spire
  Austin: ok, walk down to the river, we can meet there
  Tony: great! thanks man
  Austin: no prob, you'd do the same for me
target: Tony wants to get back home from the city centre but the underground is not working. Austin is going to pick Tony up from the Spire. 