The questions and answers in a conversation with a nocoiner will depend on the true interest of the latter in Bitcoin. The most recurrent one will always be, in my opinion, THE FLUCTUATION OF THE PRICE. In that sense, the explanation will be based on what they know about money, if they know anything at all because most of them have and use money but have no idea, so a good start is to read (or review) the book Bitcoin Pattern, for me a little gem. Afterwards, if they are really interested, they will realize that to understand Bitcoin, a conversation is not enough. Another issue is that you can define what Bitcoin is? in the simplest way possible. And another suggestion is to know how Bitcoin solves a problem that they have or see.
I hope you have success. It is always good that more people embrace Bitcoin, but if they don't want to later remember
BETTER, MORE BITCOIN FOR US