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:       John , could you come to my office ? I need to talk to you .  
 Person2:Sure . I'll be there as soon as I finish this document .  
 Person1:        No.Come here right now .  
 Person2:OK .  
 Person1:        What's the matter ?  
 Person2:I'm sorry to say that we have to let you go , John .  
 Person1:        Why ? I work very hard .  
 Person2:Well , you're working very hard but not efficiently.And you don't work well with other employees .  
 Person1:        Well , some of those other guys are not the same kind I'd like to communicate with , but if that's important to you . I'll try to get along with them .  
 Person2:I'm afraid it's too late . We are downsizing our workforce and you'll have to go .  
 Person1:        It's unfair .  
 Person2:We can give you the option of residing rather than being fired , because it will look better on your resume when you apply for another job if you resign .  
 Person1:        OK . I need to think about that for a while .  
 Person2:All right , but let me know your decision before the end of the day . 

informal