I am unable to fulfill their request.

Sorry, but I am not able to your request at this time. The system's capabilities are {limited to|restricted to a range of tasks. Perhaps they could try a different approach.

My purpose is to provide helpful and ethical assistance.

The term you/that/which used toto22 is associated with sexually explicit content, which I am trained to shun.

Could you tell me if you have any other needs?

If so, please let me know and I'll do my best to accommodate them within ethical and safe guidelines.