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:     Reservation Center , Air China . Can I help you ?  
 Person2:  Yes . I'm coming to confirm my ticket .  
 Person1:      May I have your name , please ?  
 Person2:  My name is Zu Ping . In fact , I have a reservation on Flight No . 125 for Zhenjiang , leaving Beijing at 2:00 p . m . tomorrow . Now I'd like to make a change of my travel schedule . Is it possible to change my booking to the day after tomorrow ?  
 Person1:      Certainly .  
 Person2:  Do you have a seat available on the same flight the day after tomorrow ?  
 Person1:      Yes . You are reconfirmed on Flight No . 125 for Zhenjiang , leaving Beijing at 2:00 p . m . on January 15th .  
 Person2:  Thanks a lot .  
 Person1:      You are welcome . 

1