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:       How ’ s the food ? 
 Person2:It ’ s pretty good . 
 Person1:        Well I don ’ t think so . I don ’ t like it at all ! 
 Person2:I ’ m afraid you ’ re being too particular about your food . 
 Person1:        I eat dog food when my parents are out . 
 Person2:We ’ re in the same boat ! I ’ Ve eaten fast food the whole week . I hate it now . 
 Person1:        Poor us ! All this junk food lacks nutrition ! 
 Person2:Let ’ s dine out tonight for a change ! 
 Person1:        Good idea ! 

informal