<human>: My friend has a lot of allergies. What can I do to help him?
<bot>: You could make sure that he is wearing a mask when he's out in public and wash your hands frequently. You could also try to keep his home environment clean and dust-free, as dust mites can be triggers for allergies. If you're able to, you could also try to limit the amount of time he spends outdoors during allergy season.