make a diaog . then, practise it with a friend . your friend is chosen to respreset your shool in a writing competition . congrtulate him . wish him luck

A : Hello, B! Congratulation!
B: Congratulation for what?
A: You are chosen to represent our school in a writing competition, right?
B: Absolutely, yes.
A: So, congratulation!
B: Haha, thank you, A. Wish me luck!
A: Of course, Good luck!