Asking for a permission

Lluís - Father, can I go to a party with William on Saturday at five o'clock?

Father - Yes, of course.

Lluís - Cool. Oh, and can I stay at William's house after the party?

Father - No , you can't.

Lluís - Why not?

Father - Because at eight o'clock we are going to the cinema.

Lluís - OK. Er, one more thing. Can you borrow 5 pounds?

Father - OK. Here you go. I'll lend you the money if you promise to come home before 11 o'clock.

Lluís - OK. I will. Thanks, father.