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'm getting so paunchy that I'm afraid I have to buy a new belt to-morrow , and I think I must go on a diet .  
 Person2:You are just a little bit chubby , not paunchy .  
 Person1:        You know , I'm a compulsive overeater . I got to watch what I eat .  
 Person2:More physical exercise may help to keep your weight down .  
 Person1:        You said it . 

informal