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:     You're going to Shanghai tomorrow , are you ?  
 Person2:  That's right . Do you think it'll be cold ?  
 Person1:      It might be . You'd better take a heavy sweater with you.The nights are usually quite cold at this time of year .  
 Person2:  Do you think I'll need a cotton coat ?  
 Person1:      Not for now , I think , But I believe there'll be rain , so take your raincoat with you . 

1