It would be great to have a simple built-in database within Vapi. Adding external storage plus automation creates a lot of extra work. We are not looking for a full CRM, just a lightweight interaction memory for returning customers. Since we already have their phone numbers, their past interactions could be linked to that number and summarized automatically, giving the assistant enough context to have a more personalized, context-aware conversation when they call again, the thing is retell has this feature which again it makes perfect since the historical call recording and transcripts along with their phone numbers are within VAPI, so it's no brainer, but what do i know!