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:     How long will it take us to drive to London ?  
 Person2:  I think it ’ s a distance of 180 kilometers from here to London , so it should be a two-hour drive on the motorway .  
 Person1:      That ’ s unless there is a traffic jam . It could take three hours .  
 Person2:  You ’ re right . We will be able to travel at high speeds at the beginning and end of the journey , because we will be in built-up area .  
 Person1:      So , shall we allow three hours to cover the distance ?  
 Person2:  Ok . You haven ’ t seen my company car , have you ?  
 Person1:      No . let me take a look ... It ’ s longer than my car .  
 Person2:  I think it ’ s over five meters long . I can ’ t remember exactly . It has a maximum speed of over 200 kilometers an hour .  
 Person1:      Wow ! That ’ s fast ! I don ’ t think we will be traveling that fast on the motorway .  
 Person2:  We can ’ t . if we went that fast , we would break the speed limit . 

1