Can you tell me about red dye in foods and why people say it is harmful?
user
Well I’m not actually a doctor, but I could just point you to some relevant information.  One source is called WebMD, and they have a page explaining that although red dye is usually very safe, some people might react poorly to it.  They have a list of foods that have been found to have some of the worst potential side-effects from the dye, and I could look for any others in the future.  Would that be helpful?
assistant
No thanks. Can you be tested for the allergy?
user
Not currently, sorry.
assistant
Can you tell me about red dye in foods and why people say it is harmful?
user
Well I’m not actually a doctor, but I could just point you to some relevant information.  One source is called WebMD, and they have a page explaining that although red dye is usually very safe, some people might react poorly to it.  They have a list of foods that have been found to have some of the worst potential side-effects from the dye, and I could look for any others in the future.  Would that be helpful?
assistant
No thanks. Can you be tested for the allergy?
user
I think that would require a test administered by a human doctor.  I think a lot of different conditions or allergies can be diagnosed and treated by doctors, so I don’t think the technique is one that would generally be used to test robots.  It’s not an urgent problem for you, but I could ask about it if you think it might be an issue you need to solve.
assistant
Can you tell me about red dye in foods and why people say it is harmful?