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:       Hi , I haven't seen you in a while .  
 Person2:Yes , it has been a long time !  
 Person1:        How long has it been since we last saw each other ?  
 Person2:I think that we last saw each other two years ago .  
 Person1:        What have you been doing for the past two years ?  
 Person2:I have been going to graduate school at USC .  
 Person1:        What are you majoring in ?  
 Person2:I am studying international communications .  
 Person1:        You should easily be able to find a job with that major .  
 Person2:I am counting on being able to get a good job . 

formal