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 , is this the Guyon Travel Agency ?  
 Person2:  Yes , sir . What can I do for you ?  
 Person1:      I want to travel to the ancient town in the south of China . Would you please tell me something about it ?  
 Person2:  Sure . There's network of canals . And there are white walls , black tiles , small bridges , flowing rivers , flagstones roads , blue sky and white clouds . Few places have preserved the past like this place . Walking on the ancient road makes us back to our sense .  
 Person1:      Wonderful . That's just what I expect , where is my first place if I go there ?  
 Person2:  Zhouzhuang .  
 Person1:      How long does the tour take ?  
 Person2:  It's about two days .  
 Person1:      what's the cost ?  
 Person2:  It's about 300 yuan .  
 Person1:      I know . Thank you very much .  
 Person2:  That's all right . May you have a good trip !  
 Person1:      Thank you .  
 Person2:  My pleasure . 

1