Historical clue formulations

• "Always happy to help!" — 2024-07-24
• Noon, Eleven — 2020-11-04
• 24/7 — 2014-10-12
• Response to "Thanks so much" — 2011-09-24
• "Whenever" — 2008-12-29
• Whenever — 2007-11-25
• "Whenever" — 2004-03-28
• "Happy to be of service!" — 1999-11-05