"Hmm," Clotho mused, lightly drumming her fingertips on the counter. "I think so, let me show you where they...well, where they were last," she said with a laugh. "Sometimes we reorganize and things get shuffled around, and we lose track for a bit."
Lachesis chose that moment to call down the stairs, "Atropos? Could you come up here a moment?" Both sisters groaned internally. This usually led to awkward questions, playing it off as their mother having a strange sense of humor, or that they were nicknames they'd picked up along the way. Either way, the other person usually left the shop quickly and didn't come back.
Atropos retreated upstairs quickly and hissed, "There is a mortal downstairs, less free with the real names, maybe?"
Lachesis made a guilty face. "Clotho can take care of it," she said confidently.