Write a dialog based on this summary:
Wendy is going to the shop and will buy yogurt and a chocolate bar for Alex. Wendy will be back in 15 minutes. .
Wendy: I'm popping out to the shop. Do you need anything?
Alex: Will you get me some yoghurt and a chocolate bar?
Wendy: Please? :-)
Alex: Will you get me some yoghurt and a chocolate bar, please? :-)
Wendy: Standard order, sir? Natural yoghurt and plain chocolate?
Alex: You know my too well. You're getting dangerous :-p
Wendy: I'll be back in 15 min.
Alex: Thank you!