This Twilio is really awesome. I just have a question to which I was not able to find a straightforward answer. 
All calls in twilio(Incoming and Outgoing) take place through webhooks.i.e you have to specify to which URL an incoming call needs to be redirected. Say suppose, once an incoming call to a twilio number is redirected to the URL, the set of actions defined in the URL are being provided as response to the caller. 
Instead of this, is it possible for a real person to answer an incoming call to a twilio number. I am already aware of the "dial" verb where you can redirect the call to a different number. My exact question is whether is it possible to make a real person answer a call directly in the twilio number itself?
Yes, a real person can answer a Twilio inbound call.  The way you do that is to Forward that call to the real person's real phone number.
Make real people answer calls in Twilio