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:       What kinds of Tv programs do you enjoy watching ? 
 Person2:I like current affairs programs and documentaries , especially wildlife ones . How about you ? 
 Person1:        I like those kinds of programs too . They ’ re very informative . I think that many people underrate the education value of Tv . 
 Person2:I agree . People often criticize Tv for showing too much sex and violence . 
 Person1:        Yeah . And that ’ s so funny because most people prefer watching sex and violence to watching something more educational ! 
 Person2:Right . You can ’ t blame the tv stations for showing popular kinds of programs . They need to make money from advertisements shown during and between programs . 
 Person1:        In my country , there ’ s a time limit on the advertisements that can be shown . I think it ’ s about six minutes per hour . 
 Person2:That ’ s great idea . But don ’ t the Tv station lose a lot of money because of that ? 
 Person1:        No . they don ’ t . they simply charge higher prices at peak times . Is there no limit on the amount of advertisements that can be shown on Tv in your country ? 
 Person2:Not as far as I know . We have so many advertisements . the interruptions are unbearable sometimes ! That ’ s one reason that many people prefer satellite or cable Tv , where you pay a fixed amount each month . 
 Person1:        Some people have satellite and cable Tv in my country , but people don ’ t seem to keen to pay for their Tv programs . Besides , the terrestrial channels offer a good range of programs . 
 Person2:Well , there ’ s a wildlife documentary on Tv in a few minutes . Shall we ? 

formal