Di dove sei (tu)? = Where are you from? (informal)
Di dov'e' (Lei)? = Where are you from? (formal)
Sono di...= I am from...
Dov'e'...? = Where is...?
Ecco... = Here is...
And here are some famous cities and their Italian and English pronunciations.
Roma = Rome
Milano = Milan
Venezia = Venice
Firenze = Florence
Napoli = Naples