Definition: You are given a conversation between two people. 'Person1:' and 'Person2:' are used to separate their respective dialogues. If the conversation begins with a question, label it '1' otherwise '0'.
Input:  Person1:     Ok , I ’ Ve got an up-to-day map . Let ’ s check the route from here to the airport .  
 Person2:  Where are we ? Oh , here we are . So we drive to the A120 and turn left .  
 Person1:      No , we turn right . Remember that we are coming from this direction .  
 Person2:  Oh yes ! Sorry ! Then we drive to the M11 motorway .  
 Person1:      How far is that ?  
 Person2:  It ’ s only seven miles . We turn left to join the motorway and drive south .  
 Person1:      According to the map , we get off the M11 at the second junction and join the M25 . That ’ s the motorway that goes around the edge of London .  
 Person2:  That ’ s another 15 miles , so that ’ s 22 miles total so far .  
 Person1:      Then we drive west on the M25 . we must be careful to turn in the right direction !  
 Person2:  Then we drive on the M25 . it turns south . When we reach exit 15 , we turn left and go west along the M4 .  
 Person1:      Then we take the first Heathrow Airport . What ’ s the total distance ?  
 Person2:  The journey around the M25 is 33 miles and then 3 extra miles to get to the airport . So how many miles is that together ?  
 Person1:      22 miles to the M25 , 33 miles on the M25 , and 3 after that . That ’ s a total of 58 miles , isn ’ t it ?  
 Person2:  It shouldn ’ t take us very long to cover that distance . Remember that we can go quite fast on the motor way .  
 Person1:      We can only go fast on the motor ways if there isn ’ t much traffic . I think we should allow ourselves plenty of time to get there . Being early is much better than being late . 

0