A Brief Conversation On The Westbound Central Line At St. Paul's

I'm travelling on the Central line in London. A guy and a girl get on a few stops after me. The guy grabs the only free seat and the girl is left standing. They carrying on an occasionally rowdy conversation as the trip continues.

Just before the St. Paul's stop the girl sits down on a seat that has become free and starts drinking water out of a bottle she has in her bag.

Guy: "D'you 'av war-uh? Where'dyou geh war-uh?"
(pause)
Girl: "Shop."