A: I'm not sure he'll get it done in 15 minutes.
B: Don't worry, he's done this a lot of times.

A: Did you do the test very well, B?
B: No, definitely not. I don't hope of getting even 50.
A: But, are you sure?
B: Absolutely. Not a hope!
A: Don't worry too much. Next time is better.

itu dialognya :)