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'.

Q:  Person1:       You said you like classical music very much . Then who is your favorite opera star ?  
 Person2:There are three of them , the Three Tenors .  
 Person1:        Oh , you mean Pavarotti , Domingo and Carreras . Have you been to their live shows ?  
 Person2:Yeah , it's really a unique experience . It's a solo concert by Pavarotti . He put on the performance in the Forbidden City in Beijing .  
 Person1:        I've heard of that one . It was also his swan song .  
 Person2:Besides , speaking of classical music , we should never forget about the New Year's Concert .  
 Person1:        Of course not . People all over the world watch it on TV , or listen to it on the radio .  
 Person2:Sure . It's undoubtedly one of the biggest classical music events . Have you ever been to the live show ?  
 Person1:        Yes , I went to the New Year's Concert in 2005 .  
 Person2:Wow , you are so lucky . I saw that one on TV . But it must be so different to be there in the concert hall .  
 Person1:        That's for sure . You know , it's really amazing to be in the best concert hall , listening to the performance by the best orchestra . I had the greatest time ever .  
 Person2:Who was the conductor at that event ?  
 Person1:        Lorin Maazel . He did an amazing job . Moreover , he just celebrated his 75th birthday .  
 Person2:So cool . I wish I can go to the live New Year's Concert someday in the future .  
 Person1:        The right opportunity for you would come along soon . You know , music is transnational .  
 Person2:I believe in that . Well , the performance is about to begin . Let's be quiet . 

A: informal
****
Q:  Person1:       How come you're still up ? Shouldn't you be asleep by now ? 
 Person2:I've been having a hard time sleeping lately . 
 Person1:        As far as I know , insomnia is usually caused by stress . Are you stressed at all ? 
 Person2:Well , I'm really worried about my grades . I didn't think this course would be so stressful . 
 Person1:        You're a good student . I'm sure you can do well . What you need to do is to relax . 
 Person2:You're probably right . I just wish it were that simple . How can I stop feeling so anxious all the time ? 
 Person1:        Taking a yoga class or learning some relaxation techniques can help you cope with your stress . 
 Person2:I don't really have time to learn anything new . I need to spend my time studying ! 
 Person1:        You need to take some breaks throughout the day . Studying all day isn ’ t very usually effective . 
 Person2:You ’ re right . I usually end up staring at my computer or checking my email instead of doing my work for class . 
 Person1:        Besides , it ’ s not difficult to learn yoga . In fact , I can teach you a move that ’ s supposed to help you fall asleep ! You just have to sit down like this , bend over and breath in deeply . 
 Person2:That ’ s fantastic . I ’ m going to go try that out in my room now . good night ! 
 Person1:        Good night , sleep tight ; don ’ t let the bed bugs bite ! 

A: informal
****
Q:  Person1:       Who's that ?  
 Person2:Saint Jude-he's the saint of lost causes . Like my cousin , Anna , who can't stop getting pregnant . She's a lost cause .  
 Person1:        Is that your cousin in the back ?  
 Person2:Yep . She's always got a bun in the oven . She was pregnant before marriage-a real sin in the Catholic Church .  
 Person1:        What about birth control pills ? Don't they work on Italians ?  
 Person2:Ha-ha . Birth control and abortion are four-letter words in my family .  
 Person1:        And I heard that Italian men have very active libidos . 

A:
informal
****
