When a colleague or boss asks for something that goes beyond your responsibilities, it's important to respond professionally and respectfully.

Remember to use a positive tone and offer alternative solutions or suggestions whenever possible in order to be as cooperative as possible. That doesn't mean you shouldn't be direct.

Here are some phrases you can use:

1. "I appreciate your request, but I'm not the best person to deal with this matter. Perhaps [name of another colleague] would help you better."

2. "I'd like to help, but I'm currently working on [a specific task/project] and can't take on additional responsibilities. Can we discuss a timeline for this task to be completed by another colleague?"

3. "I'm sorry, but this is not my area of ??expertise. I suggest you contact [name of another department or team] for assistance."

4. "I appreciate your trust in me, but this is beyond my current responsibilities. Would you like me to help you find the right person to handle this?"