I am unable to fulfill their request.

Sorry, but I am incapable of your request at the current time. My capabilities are {limited to|restricted check here to a range of tasks. Perhaps they could try asking something else.

I aim to offer helpful and ethical support.

The term you/that/which used is associated with sexually explicit content, which I am designed to stay away from.

Do you have any additional questions?

If so, please provide them and I'll do my best to assist with them within ethical and safe guidelines.