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:     Excuse me . Do you think I can get there in time to catch the 11:30 train ? 
 Person2:  Well , let me see . Now it's 11:00 sharp . It's a long way to go.If I take the shortest route , we may come across a traffic jam.If I take a less heavy route , it will save us 10 or more minutes , but you'll have to pay more . Which do you prefer ? 
 Person1:      Are you sure that I can get there in time if we take the less heavy route ? 
 Person2:  Generally speaking , we can if we go at this speed and nothing unexpected happens . 
 Person1:      How much more do I have to pay ? 
 Person2:  Compared to the shortest route , you may pay around 5 Euro more . 
 Person1:      That's acceptable . No one wants to miss a train . 
 Person2:  OK ... Here we are . We'll turn left at this cross . To go straight ahead is the shortest route . 
 Person1:      Thank you ! 

1