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:     We will have a vacation next month . Why not have a tour ?  
 Person2:  Good idea . Where shall we go ?  
 Person1:      What about going to Xi'an ?  
 Person2:  Don't you think it is too far ?  
 Person1:      So what's your plan ?  
 Person2:  What about going to Beijing ?  
 Person1:      So we'll compromise . We'll hit the Huangshan in Anti .  
 Person2:  OK ! 

0