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:     what are you looking for ?  
 Person2:  I want to buy a new camcorder for my trip this summer .  
 Person1:      do you know what camcorder options are available ?  
 Person2:  not really . I thought I'd just have a look today .  
 Person1:      would you like to look at the new digital camcorders that have just come in ?  
 Person2:  sure . I'd like to see the smallest camcorder that you have first .  
 Person1:      ok . This Sony model is their newest and our most popular camcorder . Why don't you see if you like the way it feel ?  
 Person2:  it's very light . That would be good . How is the battery life ?  
 Person1:      it's got an above-average battery life . It lasts up tp 12 hours and can be charged in 30 minutes .  
 Person2:  can you also take still photos with this ?  
 Person1:      yes , that is an option .  
 Person2:  how about night vision ? Can you use it in the dark ?  
 Person1:      yes . I can show you examples of some footages that was taken with this camera in the dark .  
 Person2:  that's not bad at all . How's the microphone ? Does it pick up much sound ?  
 Person1:      It can record any sound that's within about 8 feet of the camera .  
 Person2:  how does that compare with other models ?  
 Person1:      there are models that can pick up more sound than this one , but they're much bigger and heavier than this one .  
 Person2:  I guess you can't have everything , can you ? 

1