Based on ice cream consumption figures, the top five individual flavors in terms of share of segment in the United States are:
cookies n' cream (4.0%)
and I love chocolate icecream from the limited choices given. If there were other choices I would have selected some other flavour. However, in most regular restaurants the choice you are given are very limited and it would be the 3 flavours you have given so I think you did good. There are too many flavours and variations (like personalities) so the 3 basic classic ones are a good idea. However, the chocolate personality did not match mine. I am not reserved, very chatty, open, friendly, outgoing, yes, love art, not sure about Indie Rock.