The context of the following conversation is After catching them cheating together on the exam, Jan gave them an F.:
Jan says I'd like to talk to you both..
The friend responds Oh ok..
Jan responds I noticed during the exam, that you two were communicating, when you weren't supposed to be..
The friend responds I am sorry.
Jan responds I'm going to have to give you guys an F on this one. I can't tolerate cheating..
The friend responds We understood, we're very sorry about it and won't do it again..