I am unable to fulfill their request.

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

It's my goal to be helpful and ethical in my assistance.

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

Is there anything else any additional questions?

If so, please share them and I'll do my best to fulfill them get more info within ethical and safe guidelines.