text: William: hello
  Isabel: hi
  William: whats up?
  Isabel: getting ready for gym
  William: oh, you are training?
  Isabel: twice a week
  William: i have to join you one day :)
  Isabel: maybe today?
  William: but you are almost ready..
  Isabel: i will wait for you :)
  William: ok so give me 20 minutes
  William: i will go with you
  Isabel: ok :)
target: Isabel goes to the gym twice a week. William decides to join her today. He will be ready in 20 minutes. Isabel offers to wait.