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:     Your husband is very helpful , isn't he ?  
 Person2:  Willing to help , maybe , but not as helpful as you think .  
 Person1:      Really ?  
 Person2:  Last night he told the children a cliff-hanger story and both of them were scared out of sleep . 

1