You are given a conversation between two people. 'Person1:' and 'Person2:' are used to separate their respective dialogues. You are required to assign a label 'formal' if there is an absence of emotion and a presence of questions anywhere within the conversation. If such pattern is not found assign the label 'informal'.

 Person1:       Since China was open to the outside world , its trade forms have become much more flexible . One of these commonly used forms is co-production . Would you please do a bit explanation of it , Mr . Walker ?  
 Person2:Well , under this arrangement two parties cooperate to manufacture a product or a category of products , for example , machine tools for export . Each party produces and supplies a part of the components and parts ; one party is a Chinese enterprise , the other , an overseas firm . Most probably , the foreign counterpart contributes technology and equipment , and sometimes , parts and components , while the Chinese enterprises factory building , labor and other resources to the cooperative production . They join hands and fulfill orders together by an agreement or a contract .  
 Person1:        I suppose that the assembling of these components and parts , particularly the marketing of the finished products should take place in China .  
 Person2:Not necessarily . It depends on the contract stipulations . They may be marketed in the foreign country where the other party is located , or even in a third country .  
 Person1:        I think the principle of co-production is to expand export trade . It's a reciprocal business , isn't it ?  
 Person2:Yes , you are right . Either party is not well-equipped to produce the final products single-handedly , but they can enter into an agreement . In such case , each side contributes different resources to make the manufacture of a certain product or a category of products possible . 
formal

 Person1:       Did you vote yesterday ? 
 Person2:I sure did ! 
 Person1:        What candidate did you vote for ? 
 Person2:I voted for Obama . 
 Person1:        I ’ m shocked he actually won . 
 Person2:I knew he would win . 
 Person1:        How ’ d you know ? 
 Person2:He was the best candidate this year . 
 Person1:        What about him being black ? 
 Person2:I guess America is finally maturing . 
 Person1:        I think you have a point . 
informal

 Person1:       We thought you might like to participate in our rehearsal .  
 Person2:I ’ m afraid I ’ m already booked up for next Sunday . But thank you just the same .  
 Person1:        That ’ s a pity . We can arrange another time hopefully . 

informal

