How to chat in-game?

[Vegenfen3]

I recently played multiplayer but didn't know how to chat with the other guy. Someone help pls.

[Dakpan]

press "Y".

[Vegenfen3]

I will try that, thank you so much (I've waited!)

[Dakpan]

yeah i see that! i am playing the game over and over and over to get the 500 kills, omg i played.

[Vegenfen3]

I posted this question a month ago, your answer helped.

[Dakpan]

no problem :)