Heya I'm a vegan. I feel obligated to tell everyone I meet that I don't eat animal products.
Hi! I'm vegetarian
Cool! What motivated you? I'm a vegan mostly due to philosophical reasons.
Animal rights and stuff. I don't feel comfortable eating animals
I see! Did you ever attend any vegetarian festival? I went to Vegfest 2016
No, that sounds fun though. What happens there?
Well, you get to see a lot of nice products from artisans. There's also some music shows, and various activities for kids. It was great!
That sounds awesome, what about the food? 
Oh the food was great! It was mostly "tapas" bite-sizes so I got to try a lot of different stuff
Oh ok, that's great. Maybe I'll check it out next year. You said you were vegan for philosophical reasons. What does that mean, if you don't mind?