AI SMS Bot and AI Sales Assistant for outgoing calls

Looking for someone to help create a ChatBot Assistant, which will send a SMS messages to leads, communicate with them and try to make a sale. And also need the same option for AI Calling Assistant, to make outbound calls to the leads.

I think Twilio and Open AI would be good for this. Open AI should be releasing Voice API any week/month now. Other option would be Vapi and Make.com, etc. The chat bot can be from Voiceflow or similar platform.