请根据下列材料写篇对话：大明和李林去餐馆吃饭。你吃饺子， 李林吃面条，他们每人一瓶牛奶。一共花了30元。

LiLin : A cola for me , too .

LiLin : How much is it ?

Casher :It's thirty yuan .

LiLin : Here you are .

Casher :Thank you . Enjoy your meal !