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:       Good morning . How are you ?  
 Person2:I'm very worried , doctor  
 Person1:        Oh ? What are you worried about ?  
 Person2:I'm afraid that I'm very ill .  
 Person1:        I'm sorry to hear that . Why do you think so ?  
 Person2:Because I feel tired all the time , even when I wake up in the morning . I find very difficult to do any work . I have no appetite . My wife cooks me delicious meals but I can only eat a little .  
 Person1:        How do you sleep ?  
 Person2:Very badly , doctor .  
 Person1:        Do you find it difficult to get to sleep , or do you wake up early ?  
 Person2:Both , doctor . I never get to sleep until two o'clock and I always wake up at five .  
 Person1:        Are you worried about anything ?  
 Person2:Well , yes , I am . I'm worried about my work . I've just taken a new job . I earn a lot of money but it's difficult work . I'm always afraid of making a mistake .  
 Person1:        I see . please take off your shirt and lie down on the couch .  
 Person2:Yes , doctor . ( The doctor examines the patient )  
 Person1:        Well , there's nothing very much wrong with you , I'm glad to say.You ' re working too hard and worrying too much.Do you take much exercise ?  
 Person2:No , doctor . I never have enough time for exercise . I start work very early in the morning and finish late in the evening . Then I can't get to sleep . Can you give me some medicine to help me to sleep ?  
 Person1:        I can , but I'm not going to . You don't need medicine . You need advice . Don't work so hard . Too much work is bad for you . Don't worry about your work.It ' s silly to worry . Take regular exercise .  
 Person2:But I may lose my job , doctor ! It's hard to get a job like mine .  
 Person1:        Then get an easier one , even if you earn less money . Which would you rather have , health or wealth ?  
 Person2:You're right , doctor . It's more important to be healthy than wealthy . I'll change my job . I'm grateful for your advice .  
 Person1:        Come and see me again in a month's time . I think you'll be a different man ! 

informal