answer: #Person2# doesn't know where the bus is going. Then #Person1# and #Person2# find they're in the wrong direction.
documents: #Person1#: Do you even know where this bus is supposed to go?
  #Person2#: It should take us all the way up to Altadena.
  #Person1#: Don't you know?
  #Person2#: I'm not positive if it does or not.
  #Person1#: Is this the right bus, or not?
  #Person2#: I have never been on this bus, but I'm sure it's the right one.
  #Person1#: Where are we? This is not Altadena.
  #Person2#: I know, and we've been on the bus forever.
  #Person1#: Tell me what the street signs say.
  #Person2#: Oh my gosh, that one says Temple City.
  #Person1#: Next time, I'll look for the bus myself.
  #Person2#: Well, now I know the bus that'll take us back.