text: Mark: Hey, sorry to be disturbing you. I know you're probably busy with classes, but can you call me when you finish? I have something important to tell you...
  Cynthia: You know what, I probably can't make it today - I end pretty late. Can't you send me a text about whatever is going on?
  Mark: It's... about money... Something doesn't add up. Okay, I'll wait, if you find 5 minutes in the evening that would be great - it's not that important.
  Mark: But seriously, don't worry about it ;)
  Cynthia: I don't think I ever gave you money back for the pasta... How much do I owe you?
  Mark: Nooo, it's not about the pasta, something different - just call in the evening and I'll explain everything calmly and you really have nothing to worry about
  Cynthia: Yeah, but you also covered my stay... I'll call you if I get the chance, but I really am ending late (which is why a text message would be better)
  Mark: Look, if you don't manage to call me today, then you can call me tomorrow. And please, stop worring because you don't have to - when we'll talk I'll explain :)
target: Mark wants to talk with Cynthia about money today. She ends classes late so she suggests sending a text message. Mark insists on calling, today or tomorrow.