Pretty sure you wont, humans vary the exact wording. They will say the same song but they wont answer the exact same way every time. Even if they say the same words two times they wont use the same tone and body language, as they don't just communicate via words and that nonverbal language is a part of what we say.
Nicely circling back to LLMs not being able to learn and form memories.
If you have hundred different people, they will of course do something different. Just like hundred different AI model will do something different. The question you have to ask is if the same person under the same circumstances would do the same.
Luckily, we have an answer to that: They would. Transient Global Amnesia is a condition where people temporarily lose the ability to form memories and in turn they keep repeating the same conversation again and again[1]. Their brain keeps asking the same question again and again, as it doesn't remember the answers it already got.