My friend is coming over for dinner but they're vegan. I don't know anything about vegan food. What can I serve as a main course?
user
Maybe you can make vegetable soup and a salad to go with it? That way they could pick out the ingredients they want to eat and also you could get a head start on making dinner.
assistant
How can I make sure the vegetable soup and salad has no animal products at all in it?
user
Vegetable soup and salad is a great place to start, but there’s definitely room to make a more vegan-friendly meal. You could also talk with them and find out which specific ingredients or types of ingredients they’d want to avoid.
assistant
What I mean is, how do I make sure like the sauces or whatever are 'vegan'?
user
It sounds like you’re asking about the following ingredients: milk, cheese, eggs, butter, gelatin, etc.  The best way to avoid those ingredients is to not add them in the first place!  You can make soup without adding milk, you can make a salad without adding cheese, etc.  But if you’re having a problem with the ingredients in a specific recipe or dish, you can also avoid them.
assistant
My friend is coming over for dinner but they're vegan. I don't know anything about vegan food. What can I serve as a main course?
user
Maybe you can make vegetable soup and a salad to go with it? That way they could pick out the ingredients they want to eat and also you could get a head start on making dinner.
assistant
How can I make sure the vegetable soup and salad has no animal products at all in it?
user
Vegetable soup and salad is a great place to start, but there’s definitely room to make a more vegan-friendly meal. You could also talk with them and find out which specific ingredients or types of ingredients they’d want to avoid.
assistant
What I mean is, how do I make sure like the sauces or whatever are 'vegan'?
user
Ah! Right.  You could just make a basic vegetable soup and salad, and then look up vegan-friendly recipes for any additional side dishes.  There are lots of vegan cookbooks and blogs with plenty of ideas for ways to keep food vegan without sacrificing taste.
assistant
My friend is coming over for dinner but they're vegan. I don't know anything about vegan food. What can I serve as a main course?