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:     What's the matter ?  
 Person2:  Which subway should I take to get to the East Side ?  
 Person1:      Oh , you have to take the shuttle to Grand Central .  
 Person2:  Which train is that ? Which platform does it leave from ?  
 Person1:      It's not on this platform . These trains are uptown and downtown , not crosstown . You have to go up these stairs over there . 

1