ada yang bisa bantu bikin dialog pake kata if

a : if i wearing this, what will i look?
b : you look more slim and beautiful
a : how if i wearing this?
b : its bad idea

A : hey B why you look so sad?
B : i got a bad score in math test
A : don't be sad.. that's mean you must to study more hard if you want to get a best score
B : thanks for your advice
A : sure