A worthy script

To pull of technique of crosscutting multiple people's converstation's, we need a worthy script thatcan be funny, serious and not over power the visuals. We want a balance between subtelty of the flow of the sentences and this can be done by adjusting to some of the scenes we are filming in. For 

example we could include a voice announcement from the train that would lead into a converstaion bewteen two people as the gum is on someone walking out of a tube station.