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:       I would like to watch the Oscars on Tv tonight . How about you ?  
 Person2:Yes , I'd love to . It ’ s interesting to see who is considered the best in their field and which film are thought to be particularly good .  
 Person1:        I like watching it for the fashion . I like to see what the ladies are wearing . Of course , the men nearly always just wear the traditional tuxedo .  
 Person2:Sometimes the men wear flamboyant colours . Which films do you think will win awards this year ?  
 Person1:        I'm really not sure . Usually just one or two films look set to sweep the awards ceremony , but this year there are several contenders .  
 Person2:You ’ re right . This year should be much more exciting than usual . What ’ s you favourite award category ?  
 Person1:        You might think this strange , but I like the category for “ best foreign language film " .  
 Person2:It ’ s nice to see foreign language films making a little impact on Hollywood . I like the “ best actor and actress ” . 

informal