Contoh dialoq menggunakan modal verb

Anna:Hi Lisa,What Are You Doing Here?
Lisa:I Am Looking For Math Book.
Anna:May I Help You
Lisa:Sure. Thank You
Anna:You Are Welcome

A : What are you doing?
B : I'm eating. And you?
A : I'm walking.
B : owh . Have you eaten?
A. Already. I have eaten.
B : ok. see you again