Can I help you ?
neutral
user
Is this the right subway to the Wall Street ?
neutral
assistant
Yes , it is .
neutral
user
Could you tell me shall I take the express or local train ?
neutral
assistant
Sure . The local train . It stops at every station .
neutral
user
Which of them is the local train , please ?
neutral
assistant
You take the D train on the downtown platform , and go three stops .
neutral
user
How much is the fare ?
neutral
assistant
One dollar and twenty cents . You give me the money and I ’ ll exchange it for a token .
neutral
user
What should I do with the token ?
neutral
assistant