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 think I should join a fitness centre . I am getting a little fat and I'm totally out of shape . Even a quick walk of a few hundred metres leaves me out of breath . 
 Person2:I'm afraid you are beginning to look a little overweight . You really need to stop smoking . That's the main reason you're unhealthy . 
 Person1:        I guess you're right . I've tried stopping , but I just can't seem to quit . 
 Person2:Why don't you try smoking one cigarette less each day ? How many do you smoke each day now ? 
 Person1:        I smoke around 30 each day . 
 Person2:Ok . So for one month , reduce the number you smoke by one a day . At the end of the month , you'll have quit . You should also buy a tracksuit and go jogging every morning . You don't need to jog far . 
 Person1:        If I do a few exercises at home , like crunches , I'll soon deal with this waistline . 
 Person2:Be careful when you go jogging . Don't put yourself under too much stress . You're still a smoker shouldn't do too much exercises in your condition . 
 Person1:        I'll join a fitness centre . I'm sure they'll be able to give me more advice . There's one near my office , so I can go before and after work . I don't want to go jogging in the street , so I'll use a treadmill . 
 Person2:Good idea . Remember to eat healthily too . The trainers at the fitness centre will be able to advise you on your diet . 

informal