Possible Clues:

• 'Most definitely!'
• 'I understand that!'
• Enthusiastic affirmation
• 'Of course we will, so stop bugging me'
• 'We've already gone over this'
• 'No doubt!'
• 'You can say that again!'
• 'Of course, that's obvious'
• 'All right, already!'
• Approval often uttered impatiently