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:     Where are you going ?  
 Person2:  Take me to the center station , please  
 Person1:      OK , here we go .  
 Person2:  Do you think you can get me there seven thirty ?  
 Person1:      We shouldn't have any trouble if we don't get stuck in the traffic jam .  
 Person2:  Hope we have good luck .  
 Person1:      Here we are , you still get plenty of time . That's 8.15 $ , please .  
 Person2:  Thank you very much . Here's 10 $ , keep the change , please . 

1