something to remember (movie idea content)

ok, so i think it is painfully obvious that i can't write for shit, that is why i don't do any subjects with words
so in the future, i plan to use this as the basis for a movie, obviously i will get someone else to write it, but it's my idea so its all good right ?

"i was at work and had to go to the bank, on the pavement was a cellphone laying around. i picked it up and scrolled through the phonebook. i called the "home" entry and it was a landline and a girl picked up the call. i told her that i found the phone and she could pick it up at my work.. later that day she came along, got me a bottle of champagne and she was cute as hell so i asked if she wants to meet me this weekend - and she said yes."

it is ideal for my favourite kind of film.
obviously bulk it out, give it some background and an actual ending but wow, this is what films are made of.