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 to , madam ?  
 Person2:  Grand Central Station , please . I want to catch a 6 p . m . train .  
 Person1:      I think you'll make it if we don't get stuck in a traffic jam .  
 Person2:  Here is the Grand Central Station .  
 Person1:      Thank you . How much is the fare ?  
 Person2:  The meter reads 9.15 dollars .  
 Person1:      Here you are . Keep the change .  
 Person2:  Thank you . 

1