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:       What's up , buddy ? You look so upset .  
 Person2:I just broke up with a girl . Why didn't she understand that I loved her ?  
 Person1:        I'm sorry to hear that . What's your conflict ?  
 Person2:I don't know . She always said I didn't love her , but I did .  
 Person1:        Did you think about talking to her again ? Maybe she is waiting for your call .  
 Person2:I have asked for a talk again , but she refused and said she wanted to be quiet .  
 Person1:        Come on , guy . Maybe she isn't your right person . 

informal