text: Tatiana: Hello Natacha, i will not come today because i have exam. See you next week
  Natacha: Good luck for your exam. See you in 2 weeks. Next week we 're on holidays
  Tatiana: ok thank you and have a nice holidays 😎
target: Tatiana can't come to Natacha today because of an exam. She has to come in two weeks because next week Natacha is on holiday.