"Hello mate! How are you?"
"Im fine thanks. How about you?"
"Same but I feel hungry"
"I have a sandwich in my bag, would you like it?"
"Sure! If you want to give it to me."
"Here you are! Enjoy!"
"Thank you mate, I'll bring back tomorrow a sandwich for you"
"No... its not necessary, but thanks anyway."
I will go to eat the sandwich outside. Would you like to join me?
Sure. Lets go