根据所给菜单或首字母完成对话，每空一词。（10%）
A: Welcome ________ my snack bar. Can I _______ you?
B: Yes. I’d _______ a c__ __ and a glass of m_ ____.
A: What ________ you?
C: I want a ______ of coffee and two s___ ________.
B: How __________ are they?
A: _____________ yuan in all.
C: Oh, they are very cheap. Thank you.