Tickets, please.

GEORGE:Two return tickets to London, please. What time will the next train leave?
ATTENDANT:At nineteen minutes past eight.
GEORGE:Which platform?
ATTENDANT:Platform Two. Over the bridge.
KEN:What time will the next train leave?
GEORGE:At eight nineteen.
KEN:We've got plenty of time.
GEORGE:It's only three minutes to eight.
KEN:Let's go and have a drink. There's a bar next door to the station.
GEORGE:We had better go back to the station now, Ken.
PORTER:Tickets, please.
GEORGE:We want to catch the eight nineteen to London.
PORTER:You've just missed it!
GEORGE:What! It's only eight fifteen.
PORTER:I'm sorry, sir. That clock's ten minutes slow.
GEORGE:When's the next train?
PORTER:In five hours' time!