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:     Hi Sarah , how are you ?  
 Person2:  Fine , how are you doing ?  
 Person1:      OK .  
 Person2:  What do you want to do ?  
 Person1:      I'm hungry . I'd like to eat something .  
 Person2:  Where do you want to go ?  
 Person1:      I'd like to go to an Italian restaurant .  
 Person2:  What kind of Italian food do you like ?  
 Person1:      I like spaghetti . Do you like spaghetti ?  
 Person2:  No , I don't , but I like pizza . 

1