In a response "any" is negative, "some" is positive. I didn't know anyone at the party, she doesn't want any more coffee, we didn't go anywhere special. I know someone who lives in Bogota, he wants some more coffee, he went someplace on vacation. In a question both are OK but I use "some" when I want to hear "yes" as the response; I have some nice bananas for sale... would you like to buy some? Good question!