Where does the man want to go?

M: Hi. I was wondering if there’s a bus from here that goes to the train station.
W: Yes, sir. There’s a free shuttle that leaves the airport every 30 minutes from the north exit. Just go up the escalators, and it’s the first door on your right. The next one should come in 20 minutes.
M: Is there a quicker way?
W: You can take a taxi. It will cost about fifteen dollars and take ten to fifteen minutes, depending on traffic.