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ASCEND CONSULT · FIELD NOTES

Why we hand every lead to a person

· 3 min read · Ascend Consult

  • research
  • intake
  • people and ai

Every system we set up ends the same way: a person on your team gets the lead. That's not caution. It's what the research shows works best.

AI screens, people close

Researchers ran a randomized experiment at a telemarketing company. 3,144 customers were assigned at random to one of two setups:

  • people alone: human agents did the whole call;
  • an AI-plus-human team: an AI voice system made the first contact and screened out the uninterested, and human agents handled everyone who was interested.

Customers served by an AI-assisted agent were "almost twice as likely to make a purchase than those served by sales agents alone."

The same study also tried AI on its own, with no human. Its purchase rate was 2.1%, about the same as the weakest human agents (2.0%) and half the rate of the best ones (3.7%).

So AI alone performed like your weakest rep, and AI working with your people did best. The agents said the screening meant their time went to "more serious customers."

The newest person on the phone gains the most

A second study followed 5,172 customer-support agents at a large software company as it rolled out an AI assistant that suggested replies. The agents kept "full discretion over which, if any, AI suggestions to accept."

  • Issues resolved per hour rose 15% on average, and 30% for less experienced workers.
  • Customers were "less likely to ask to speak to a manager."
  • Fewer new hires quit.

For a trades shop, that's the part that matters. The person answering your phone is often the newest or part-time one. With the right backup, they handle calls more like your best person does.

Customers want the person there too

In a 2026 Gartner survey, 87% of customers said it is essential for companies using AI in service to offer a way to reach a human agent. Half said their interactions are easier when companies use AI. Both are true at once: they like the speed, and they want a person within reach.

What this means for how we set it up

  • AI does the codified part: answering, asking what, where and how urgent, writing it up in English, at 7 pm or in Spanish.
  • Your people do the judgment part: pricing, promises, diagnosis, the callback that wins the job.
  • Every lead lands with a named person, with the details already written down.

The studies have limits worth saying out loud:

  • The sales experiment was credit-card telemarketing, and its gains were larger for the stronger agents.
  • The support study was a software company, and its most experienced agents gained little.
  • Neither was a Katy plumbing shop.

The pattern holds anyway: the machine and the person each do the part they're best at.

Want to see where that line falls in your business? Request a 20-minute fit conversation.

Sources