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:     Lucy , what are your priorities when buying a car ?  
 Person2:  I guess the first thing is the price , the second is the size , and of course the color will play a role too . But I have to be honest . It is our today ’ s responsibility to take care about our environment . Therefore , I will also pay attention to the fuel consumption of the car . You know , the rise in gasoline prices is huge . So I would rather to consider a smaller car with smaller engine . For which I can also save some tax . Last of the list , I also consider the safety .  
 Person1:      What about the environmental factors ?  
 Person2:  Well , I do prefer the lower emission cars as long as it doesn ’ t cost much . Some environmentally-friendly cars are really expensive .  
 Person1:      Sure they are . Some hi-tech devices are built in to make sure they pollute less . Some of these green cars have not become standard . So the production costs are still high . But anyway , we should make efforts to start with . 

1