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:       you're rather energetic today . What's going on ?  
 Person2:nothing really . I think I've had a few too many coffees .  
 Person1:        free coffee is one of the perks at this place , isn't it ?  
 Person2:it's the only perk of this job ! How's your day going ?  
 Person1:        not that well . I've got that Monday morning feeling today .  
 Person2:why is that ?  
 Person1:        my boss has been breathing down my neck all day . I can't wait for the weekend !  
 Person2:your boss is a real salve-driver , isn't he ?  
 Person1:        you can say that again ! He won't even let us check our personal email at work !  
 Person2:that's not just your boss . No one is allowed to send personal emails from the office .  
 Person1:        really ? I didn't know that it was against company policy .  
 Person2:maybe your boss isn't so horrible after all !  
 Person1:        no , he is . Some bosses will bend the rules a bit sometimes , but not my boss . He always follows the rules to a T .  
 Person2:try not to let it bother you too much .  
 Person1:        thanks . I better get back to my work before my boss yells at me again !  
 Person2:ok , I'll see you in a bit .  
 Person1:        alright . See you later ! 

informal