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 would you like this order shipped ?  
 Person2:  Send it by the fastest way .  
 Person1:      Are you going to ship this by air ? That might cost a little more .  
 Person2:  How much ?  
 Person1:      I'll check the costs and call you back .  
 Person2:  OK . 

1