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:       The art critic from the daily chronicle doesn ’ t think much of the max oreo exhibition . He says that the artwork is uninspiring and old fashioned . 
 Person2:Really ? I thought the exhibition showed that he had real talent . What did you think of it ? 
 Person1:        I liked it . I didn ’ t think his works were masterpieces , but the certainly weren ’ t uninspiring , in my opinion . 
 Person2:I don ’ t think I ’ Ve ever read a good review of an exhibition by that critic . He doesn ’ t seem to like anything . Which kinds of paintings do you prefer ? 
 Person1:        I like landscapes and still life . You prefer abstract paintings , don ’ t you ? 
 Person2:Yes , I do . I like painters who use rather than watercolors . The colors appear richer . What do you think ? 
 Person1:        I agree . I prefer oils too . I collect landscapes , but I only have a small collection . You have a small collection of abstract art , don ’ t you ? 
 Person2:Yes . Good artwork is very expensive nowadays . When I was in china , I bought some calligraphy by famous artists . You should come and see it sometime . 
 Person1:        That would be nice . Can you read the characters ? 
 Person2:I know what the characters on the paintings mean . I think Chinese characters look very artistic . It ’ s said that the way they are written can give insight into the artist ’ s character . 
 Person1:        I think that ’ s true with any of the fine arts . 

informal