answer: Jacob calls Sarah to take today off because of a bad cold. Sarah finds someone else to cover his classes.
documents: #Person1#: Hello. English Language Center.
  #Person2#: Hello. Sarah? This is Jacob.
  #Person1#: Jacob? Jacob? Hi. You sound terrible. How are you doing?
  #Person2#: Oh, I have a bad cold, and I threw up three times this morning.
  #Person1#: Yuck. That sounds aweful.
  #Person2#: Oh, yeah. Could I take today off? I think if I rest today, I'll be ready for tomorrow. Maybe.
  #Person1#: Sure. We'll see if we can get another teacher to cover your classes.
  #Person2#: Oh, that'd be great. Thanks.
  #Person1#: Alright. Take care. You sound terrible. Hope you're better by tomorrow.
  #Person2#: Ah, thanks.