text: Iza: Hey, I will be coming back on Thursday after all
  Teresa: How come? Didn't you buy the tickets already?
  Iza: I did.. But my mentor called me and informed me that I can present my thesis on Friday
  Iza: I will just change the ticket, it should be for free
  Artur: And what about your boyfriend? You had the ticket together, right?
  Iza: I will have to return our mutual one and he agreed to come on Saturday morning
  Teresa: Well it is not a problem for us, at least we will see each other sooner ;)
  Iza: Just that I have to take a day off from work :/
target: Iza'll be returning on Thursday as her mentor informed her that she can present her thesis on Friday. Iza'll have to return the mutual ticket that she bought for herself and her boyfriend who agreed to come back on Saturday morning.