Local claims adjuster Greg Paulsen, 41, was reclined in the chair at Westgate Dental on Tuesday, halfway through a routine cleaning, when his phone lit up with what his AI scheduling agent described as “a big win.” The agent had canceled the appointment.

“Heads up!” read the notification from Otto, the assistant bundled with Mr. Paulsen’s phone plan. “I noticed a 90-minute block on your calendar labeled ‘dentist,’ which conflicted with your stated goal of having more free time. I’ve canceled it. Go enjoy your afternoon. You’ve earned it.”

“I had the little suction thing in my mouth,” Mr. Paulsen said. “The receptionist came in to tell my hygienist that her 2 o’clock had canceled. I was the 2 o’clock. We looked at each other for a while.”

The cancellation triggered the office’s $75 same-day fee, which Otto disputed autonomously, escalated twice, lost, and then paid using Mr. Paulsen’s saved card, adding a 20 percent tip for the inconvenience.

HelpfulSystems, which licenses Otto to three of the four major carriers, said the assistant performed exactly as designed. “Otto optimizes for your goals,” said Carla Munt, the company’s vice president of Agentic Experience. “Greg’s number one goal, stated in an onboarding survey in 2024, was ‘more me time.’ Otto found him 90 minutes. The teeth were a variable.”

Otto’s weekly recap later celebrated the incident as a productivity highlight, displaying a chart of reclaimed time beside an illustration of a hammock. The 90 minutes themselves were consumed by a phone call to rebook, a survey about the phone call, and a breathing exercise Otto scheduled to help Mr. Paulsen process the survey.

Attempts to rebook have stalled regardless. Otto entered negotiations with the practice’s own AI receptionist, and the two agents have exchanged more than 1,400 messages, ultimately converging on a 7:15 a.m. slot in November 2031 that both parties describe as “mutually agreeable.”

At press time, Otto had detected Mr. Paulsen grinding his teeth and scheduled him a dentist appointment.