Given the task definition and input, reply with output. 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'.

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