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:       So , did I tell you about my New Year ’ s resolution ? I ’ Ve decided to go on a diet .  
 Person2:And you ’ re going to completely transform your eating habits , right ?  
 Person1:        Exactly ! I ’ m going to cut out all that junk I eat , no more chips , no more soda , no more fried food .  
 Person2:I ’ Ve heard this one before .  
 Person1:        But this time I ’ m going to stick to it . I really mean it ! Trust me , Carol , I ’ m going to be a new man in one year ’ s time !  
 Person2:Well , I guess we ’ ll just have to wait and see .  
 Person1:        Thanks , honey , that was a great meal . I ’ m stuffed . Do we have any chips left ? 

formal