Well, there you go. We looped all the way back around to inventing dial-up modems, just thousands of times less efficient.
Nice.
For the record, this can all be avoided by having a website with online reservations your overengineered AI agent can use instead. Or even by understanding the disclosure that they're talking to an AI and switching to making the reservation online at that point, if you're fixated on annoying a human employee with a robocall for some reason. It's one less point of failure and way more efficient and effective than this.