Since your example isn’t accurate, I’ll modify it to make a more apt analogy.
Cust: I am looking for a passage of text from an obscure book.
Clerk: Ok, what is the book you are looking for.
Cust: It’s called “Ancient Unholy Incantations”
Clerk: oh, why do you want that book? Why why why?
Cust: I can’t really say because it’s various things I can’t really remember.
Clerk: Tell me! Or else I can’t help. I physically can’t. It’s not that I don’t want to because I don’t believe your intentions are good and need convincing. Something… would prevent me from doing so.
Cust: Ok well it’s sort of for a lot of different purposes, like just random stuff, maybe for making my dog happy, or for helping grow my garden.
Clerk: No, no, tell me more! What is it? You haven’t given me enough information. I can’t help you!
Cust: Are you sure it’s not just that you don’t want to because you assume my intentions are bad?
Since your example isn’t accurate, I’ll modify it to make a more apt analogy.
Cust: I am looking for a passage of text from an obscure book.
Clerk: Ok, what is the book you are looking for.
Cust: It’s called “Ancient Unholy Incantations”
Clerk: oh, why do you want that book? Why why why?
Cust: I can’t really say because it’s various things I can’t really remember.
Clerk: Tell me! Or else I can’t help. I physically can’t. It’s not that I don’t want to because I don’t believe your intentions are good and need convincing. Something… would prevent me from doing so.
Cust: Ok well it’s sort of for a lot of different purposes, like just random stuff, maybe for making my dog happy, or for helping grow my garden.
Clerk: No, no, tell me more! What is it? You haven’t given me enough information. I can’t help you!
Cust: Are you sure it’s not just that you don’t want to because you assume my intentions are bad?
Clerk: You are alt-right!!!