How to test an AI phone assistant before launch

How to test an AI phone assistant before it takes its first call

Calls14 May 20264 min read

A natural voice is easy to mistake for good service. A real test starts when the caller corrects a number, changes the subject or asks something the assistant cannot know. To check an AI phone assistant, rehearse the seven situations below before it takes its first real call.

The short version

Judge the ticket left after the call, not just how the voice sounds.
Rehearse corrections, changes of subject and questions outside its remit.
The assistant should pass the matter to a person honestly rather than guess.

A pleasant voice is not a test

First impressions of a voice assistant can be misleading. Fluent sentences, good intonation and a quick response make a conversation sound good. But a business doesn’t hire an assistant to sound pleasant. It hires one so that after every call someone on the team knows who rang, what about, how to call them back and what is still missing.

A good test therefore has two parts. The first is the conversation itself: can the assistant cope with the way people actually talk? The second is the outcome: does the ticket that reaches the team match what the caller said?

Seven situations to rehearse before launch

Call the assistant several times and play a different customer each time. Tick off the situations it handled without any problems.

Pre-launch test

0 / 7

Number correctionGive a phone number, then correct one digit a moment later. The ticket must show the corrected version.
Changing topic midwayStart with a booking, move on to describing the problem, then return to the booking. The assistant should get back to the purpose of the call without making you repeat yourself.
Question about price or diagnosisAsk how much a repair will cost. The assistant doesn’t make up a figure; it notes the question for someone who can answer it.
Urgent or unclear matterDescribe a situation that doesn’t fit any category. The ticket should reach a person, clearly flagged.
Unclear answerSpeak quietly or over background noise. The assistant should ask again rather than guess.
Call dropped midwayHang up before the end. Check what reached the team and whether the missing details are visible.
‘Am I speaking to a human?’Ask this directly. The answer should be clear and honest.

All done. Now compare the tickets with what was said on the calls.

Sample call: a knock under the bonnet

The call below is an illustration, not a recording of a real call. It shows what to look for: a garage customer describes a fault, asks about the price and corrects their phone number mid-call.

Garage — phone lineillustrative call

AssistantGood morning, this is the garage’s assistant. How can I help?
CustomerSomething is knocking under the bonnet. How much would a repair like that cost?
AssistantI can’t give a price over the phone, as it depends on the cause. I’ll note the details and a mechanic will call you back with a quote. What car is it?does not make up a price
CustomerGolf, 2016. My number is 07700 900 412… no, sorry, 07700 900 421.
AssistantNoted: 07700 900 421. Is the knocking constant, or only when pulling away?confirms the correction
CustomerMostly when pulling away. Can I come in today?
AssistantI can’t confirm a slot, but I’ll note that you’d like today if possible. A mechanic will call you back to arrange it.does not promise on the team’s behalf

Ticket after the call callback needed

Issue: Knocking under the bonnet, mainly when pulling away
Vehicle: Golf, 2016
Phone: 07700 900 421 (corrected during the call)
Customer’s questions: Cost of repair; whether they can come in today
Missing: Quote and appointment time: the mechanic decides

Illustration only. The key part is at the end: the ticket shows what is known, what is missing and who has the next move.

How do you compare the ticket with the call?

After each test call, read the ticket the team received and compare it with what was said. A small error in the data can do more harm than an awkward sentence in the conversation.

What to check	Why it matters	How to catch it
Phone number	A wrong digit means nobody calls back.	Deliberately correct the number during the call.
Caller’s corrections	A missed correction leaves the old, wrong detail on the ticket.	Change one detail halfway through.
Added facts	A detail nobody mentioned misleads the team.	Look for sentences on the ticket that were never said on the call.
Missing details	The team should see what isn’t known yet.	Deliberately leave out one piece of information.

When should the assistant hand over to a person?

The best assistant doesn’t answer everything; it knows where its remit ends. When an approved answer is missing or the matter is urgent, its job is to describe it well and pass it on.

Answer or hand over?

One question for every customer request.

Customer asks somethingBooking, price, status, advice.

Is the answer in the approved information?

YesAnswersand records it on the ticket
NoRecords the questiona person calls back with the answer
UrgentFlags an exceptionthe matter goes straight to a person

An honest ‘I don’t know’ beats a confident wrong answer.

A demo is not a rollout

A generic demo shows what a conversation with an AI assistant looks like. It doesn’t check whether the assistant knows your business’s rules or has access to your data. Calendars, repair status or records in your own system need their scope agreed and their integration tested separately.

Before you switch the assistant on, run through the checklist in this article against its final setup: your categories, your questions and your route to the team. See how missed-call handling works, or look at an AI phone assistant designed around your business.