If you take a few words or phrases from the responses generated by an AI and incorporate them into your own writing while maintaining your unique expression and ideas, it generally wouldn't be considered full-on plagiarism or improper use of AI. However, it's important to ensure that your writing reflects your voice and original thought.
If you're directly copying significant portions of text or relying heavily on the AI's structure and ideas without modification, then it might be considered using AI to craft your writing in a way that's less authentic. Always aim for a balance, and if you're unsure, it's a good practice to cite the AI or rephrase significantly.