Ответы и объяснения

- Hello, I'm Stefan.
- Hello, Bob. I'm Tessa. Nice to meet you.
- Nice to meet you too. Where are you from?
- I'm from Greece and you?
- I'm from America. How old are you?
- Well... I am twenty years old.
- I am seventeen. Where are you live know?
- I leave in a little house in the forest. What about you?
- I leave in Salvatore's house. Goodbye.
- See you later.
(Если что, диалог наподобие ДВ))
там не Bob во втором предл, там Stefan