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:       There ’ s a letter here for you .  
 Person2:Let me see it .  
 Person1:        What ’ s the letter about ?  
 Person2:It ’ s a letter from NYU .  
 Person1:        Tell me what it says !  
 Person2:I didn ’ t get in .  
 Person1:        You ’ re lying .  
 Person2:I ’ m not lying .  
 Person1:        Are you upset ?  
 Person2:I had high hopes for NYU .  
 Person1:        I ’ m sorry you didn ’ t get accepted .  
 Person2:Hopefully , I ’ ll get accepted to UCLA . 

informal