Definition: 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'.
Input:  Person1:       Do you think children watch too much Tv ?  
 Person2:I only allow my child to watch up to an hour a day . I don ’ t think that tv is bad for kids . I think that kids should be active and not become couch potatoes .  
 Person1:        Perhaps I should impose a limit on how much Tv my kids can watch . They don ’ t do much else in their free time . At least they always do their homework first .  
 Person2:If you decide to put a limit on the amount of tv they can watch , remember to have something else for them to do . If you don ’ t , they ’ ll get bored and misbehave .  
 Person1:        They could go out and play with their friends .  
 Person2:Sure . You could talk to other parents in your neighbourhood and plan it so that all the kids are free at the same time .  
 Person1:        Perhaps I could ask my husband to teach them foot ball or some thing . He watches too much Tv too .  
 Person2:That ’ s a good idea . Remember that if the parents watch too much Tv , the kids will probably follow suit . 

informal