Client wants me to build her an AI receptionist

So I just got off the phone from a client that wants a AI voice agent/receptionist as I'm currently in the UK i charged her a price of £300 but she saying its out of her budget so for now I'm operating the system for free for 14 days. I just need some suggestions and guidance on how to approach this. What features I should not add? Is the trial period too long? am i charging to little? etc....

15 comments