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:     Good evening , madam . Did you ring for service ? Who can I do for you ?  
 Person2:  Yes . The light in this room is too dim . Please get me a brighter one .  
 Person1:      Certainly , madam . I'll be back right away . Do you mind if I move your things ?  
 Person2:  Oh , no . Go ahead .  
 Person1:      Thank you . How is the light now ?  
 Person2:  It's much better now . Thank you .  
 Person1:      You're welcome . And if you need any other things , please let us know .  
 Person2:  Ah , yes , the room is too cold for me . I feel rather cold when I sleep . Can you turn off the air-conditioning ?  
 Person1:      The air-conditioning is already off , madam .  
 Person2:  Maybe I'm getting a cold .  
 Person1:      Would you like an extra blanket ?  
 Person2:  OK . And would you please get me some hot water , too ? I think I need to take some medicine .  
 Person1:      Certainly , madam . I'll be right back . Here is a blanket and hot water for you . Anything else ?  
 Person2:  No , thanks .  
 Person1:      Good night , madam . 

1