dialogue: Monica: Should we take the shuttle bus at 2?
  Rachel: Why 2?
  Monica: To avoid being late?
  Rachel: LOL. The lecture is at 5pm
  Monica: Hmm, too early?
  Rachel: I think it's pointless to be there 3 hours earlier
  Monica: So what? the next shuttle is at 5.30
  Rachel: We can just take a public bus at about 4
  Monica: ok, as you prefer! 
summary: Rachel and Monica will take a public but at about 4 to get to the lecture at 5 pm.