Possible Clues:

• "Count me in!"
• 'Wouldn't miss it for the world!'
• "The event sounds awesome!"
• "Totally count me in for that!"
• "Can't wait to attend!"
• "Could not be more excited to attend this event!"
• "Definitely count me in!"
• 'Just name the time and place!'
• Enthusiastic RSVP
• 'Count me in!'