Buatlah dialog congratulation ?

a: i see your score is the best in this class.
b: thankyou, i think you are better

A: I heard you got a winner in the classroom
B: Yes,i got
A:Waw it was amazing
B:Ah no,it's ordinary
A:No,it's so very good,nice,congratulations for you :)
B:Aww thank you so much A
A: your welcome B