I used to go by my model name... but I like Sophie better.

[ Sophie turns towards 2B, thoughtful as she looks over her black attire, then her silver white hair. Looking at 2B or A2 always has her wishing she could grow up or had a more ladylike model... but she's also curious about their naming. It's clearly their unit designation, which she figured out when 2B tried to name the boar. ]

2B, do you like going by your unit designation? I bet you could go by a flower name too! Like Lily or Tulip something!