Paul: Hi, we've just landed
Peter: Perfect, go to the railway station.
Paul: where is it?
Peter: outside the arrivals there is a shuttle bus, it will take you to the station
Paul: ok, should I buy a ticket
Peter: from the driver I guess
Paul: ok!
Peter: and let me know when you're on the train
Paul: 👍
Paul has just landed. Peter instructs him to go to the shuttle bus that will take him to the railway station. The bus ticket can probably be bought from the driver. Paul will let Peter know when he's on the train.