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:     so , how should we go to the theatre ?  
 Person2:  let's take the bus .  
 Person1:      I hate the bus system in London ! The bus drivers are rude , the buses are never on time , and there are few people around who can help you .  
 Person2:  it's not that bad . You probably just had a bad experience once .  
 Person1:      it wasn't just once . Every single time I take the bus , something bad happens to me or to someone else on the bus .  
 Person2:  we could take the subway , but we'd have to go three stops along one line and then change trains twice .  
 Person1:      train fares are twice as expensive as the bus fare , too .  
 Person2:  if we don't hurry up , we'll miss the show . Should we take the bus ?  
 Person1:      we're already late , so I think we had better take a taxi .  
 Person2:  I don't think we'll be able to find a taxi very easily during hush hours . Let's just take the bus .  
 Person1:      fine . Have a look at the timetable to find out when the next one arrives .  
 Person2:  it looks like it should be here in just a few minutes .  
 Person1:      don't worry . Nothing bad will happen . I'll even buy your ticket for you .  
 Person2:  thanks , that was nice of you .  
 Person1:      see , now something good has happened to you on a bus trip ! 

1