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:     It's four o'clock already . I hate to leave , but I think I must .  
 Person2:  Can you stay a little longer ?  
 Person1:      I'm sorry , but I can't . 

0