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:     Hello , is this People's Theater ?  
 Person2:  Yes , it is . May I help you ?  
 Person1:      Yes , are advance tickets for ' Nut croakers ' still available ?  
 Person2:  What date , sir ?  
 Person1:      October 16th .  
 Person2:  Let me see . Yes , we still have some tickets left . Which performance ?  
 Person1:      7:30 p . m . performance , please .  
 Person2:  OK , we have tickets at 100 yuan and 50 yuan .  
 Person1:      I'd like to reserve two seats at 100 yuan , please .  
 Person2:  All right . May I have you name , please ?  
 Person1:      Du Kun .  
 Person2:  When would you like to collect the tickets ?  
 Person1:      Tomorrow .  
 Person2:  We can hold them until one day before the show .  
 Person1:      How do we cancel , just in case ?  
 Person2:  Just telephone us , and let us know in advance . We don't charge for cancellation .  
 Person1:      All right , thank you very much . Good bye .  
 Person2:  You are welcome . Goodbye . 

1