text: Aaron: are we writing an essay tomorrow?
  Eric: yep...
  Erasmus: what? I have an appointment and I wont be able to go
  Aaron: don't forget to take the dcument from the doctor which will explain your absence
  Erasmus: thank you for reminding me of that, otherwise this rat would not let me write it again 
target: Erasmus can't write an essay tomorrow. He should take an excuse from the doctor for his absence. 