Compose a dialogue containing the expression of showing certainty and hesitation

Chanyeol: Baekhyun should i join the Singing Competition?

Baekhyun: up to you but yes why not?

Chanyeol : Okay then i'll join, but.. i don't think i will pass

Baekhyun : it doesn't matter, at least you have tried.

Chanyeol : okayy i'll try... Wait! I heard that a singer will join too, i am not doing it

Baekhyun : Oh god.. okay don't do it

Chanyeol : No.. i'll do it

Baekhyun : I HATE YOU.. God.