Possible Clues:

• "There's no point in trying"
• "There's no point"
• 'There's no point'
• "We tried, but this won't work"
• 'We tried, but this won't work'
• Statement of resignation
• 'There's no hope!'
• "Don't waste your time"
• "Don't bother trying"
• 'Don't even bother trying'