Here are the completed dialogues:
B: Yes! 1) I saw Titanic last year.
2) I loved the song 'My heart will go on'. The lyrics were so romantic.
A: I never liked that song! 3) Do you always like romantic songs and films?
B: Not really! 4) I watched science fiction films when I was young.
A: 5) Have you ever seen the Matrix? It has a great soundtrack!
B: No, but 6) I watched The Lord of the Rings last week on TV and
7) I thought the music was excellent.
A: Oh really? 8) I haven't seen that yet.