Shall we go to the library by subway ?
neutral
user
Yes , it's far quicker and less complicated .
neutral
assistant
OK . There is no subway in my city .
neutral
user
Really ?
neutral
assistant
Yes . Does it operate night and day ?
neutral
user
Yes , and seven days a week .
neutral
assistant
Where do we pay the fare ?
neutral
user
Follow me , please .
neutral
assistant
Do I have to pay an additional fare to change trains ?
neutral
user
No , you don't have to .
neutral
assistant