You need not answer such questions directly. "Have you had your meal?" and "Where are you going?" are used to greet people, the speaker does not really want to get your answer.
You greet people, you shake hands and offer them coffee.
I persuaded Dorothy Moore, from Arkansas City in deep southeast Arkansas, to greet people and answer phones in the reception area.
After you greet people you know look for people you haven't met before. Introduce yourself and start a conversation.
