My young son recently started saying "Pardon me" after, for example, burping. We try to praise, or at least respond, when he does something right, as encouragement and as a form of learning. This caused a discussion on how one should respond in general.
So my question is - what should be the correct, polite response to the phrase "Pardon me"?
My guess would be the formal "You are pardoned."
Answers should ideally ignore the fact that the response will be to a young child, otherwise "Well done" followed by applause would fit the bill.