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:     Steven , have you any friend in London ?  
 Person2:  Yes , my old friend Hanson lives there  
 Person1:      Are you close ?  
 Person2:  Yes . He's one of my best friends . Our friendship formed at college . Why did you ask that ?  
 Person1:      I'm going to London on business next week . But I know nothing about it .  
 Person2:  I get it . You want to find a guide , don ’ t you ?  
 Person1:      Yes , Steven . You always know what I want .  
 Person2:  Don ’ t worry . I will call Hanson , and ask him to help you .  
 Person1:      Thank you ! 

1