Answer:
I'm going to imagine that the friend goes to the same school so
A = you
B = your friend
A: Ok I've decided that i'm not going to use my phone during our exams
B: but you've barely studied what are you going to do
A: I'll try my best and if I fail it's my fault because I didn't prepare
B: but what if there's an emergency
A: since when have we ever had an emergency during examinations and even if we do the teachers are still going to be there
B: please just listen to me
A: you just want the phone so you can cheat don't you?
B: What no! okay let's just forget this you can do what you want
A: Ok let's study for now
B: yeah okay
