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:     Excuse me , what's the price of a single room ?  
 Person2:  That's $ 50 for a single night .  
 Person1:      Are meals included ?  
 Person2:  Yes , of course . Can I make a reservation for you ?  
 Person1:      Fine , I want to book one for overnight . 

1