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:       You don ’ t look like enjoying this workout .  
 Person2:I ’ m not crazy about it at all .  
 Person1:        You don ’ t like this sort of exercise ?  
 Person2:I ’ m not interested in it . Are you keen on it ?  
 Person1:        Yes , that ’ s funny . I thought you liked it .  
 Person2:I hate it .  
 Person1:        Never mind . It ’ ll be over in 10 minutes .  
 Person2:It ’ s the worst thing I ’ Ve ever tried . 

informal