Here is the completed dialogue:
Geoff: Is there any water in the refrigerator?
Windy: No, there isn’t any. But there is some milk.
Geoff: Are there any bananas?
Windy: No, there aren’t any bananas. But there are some oranges.
Geoff: I’ll have an orange. Are there any apples?
Windy: Yes, there are some apples.
Geoff: Great.