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:     Where did you get your mobile ? It's really cute .  
 Person2:  Oh , this ? I got it in Singapore . Here , do you want to take a look ?  
 Person1:      Thanks . Gee , it's really light !  
 Person2:  Yes , it is , isn't it ? A bit too light , really . What make have you got ?  
 Person1:      I've got an old Ericsson . Here . Take a look .  
 Person2:  Wow , that's really old .  
 Person1:      Yes , I like collecting antiques .  
 Person2:  Why don't you get a new one ?  
 Person1:      I don't know . I like this one , and I don't have any need for all the bells and whistles you get on the new ones .  
 Person2:  Really , what makes you say that ?  
 Person1:      Well , I just need to make and receive calls , and it's quite reliable . I find that the more fancy stuff they put into these things , the more likely they are to break bown or go wrong , you know ? I mean , this camera function , for instance-how often do you use it ?  
 Person2:  Sometimes , but I guess not very often . It's more for fun . Sometimes when I'm on a trip , for example , I can take a picture and send it to my kids . Or I can send a picture of a sample back to my office and get it costed up immediately .  
 Person1:      Well , that's nice I guess . So how many kids do you have ?  
 Person2:  Three . Two boys and a girl . 

1