User's selecting a personality type for the chatbot they talk to

I was thinking it would not be hard to have a number of auxiliary responses that can be peppered into an otherwise straight chatbot dialog for product ordering. By grouping such responses into different types you could easily achieve a sense of "businesslike" (no added phrases); "playful" (added phrases are jokes); or "abusive" (added phrases make fun of the user).
No sooner thought than the obvious comes up: how many people will choose an abusive dialog?
Joking aside, another type is "helpful" (added phrases are recommendations  and pieces of relevant information).