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:       Could you tell me what university you went to , Mr . Smith ?  
 Person2:I went to Yale University .  
 Person1:        Did you ? And what did you study ?  
 Person2:I have a B . A . in Economics .  
 Person1:        Would you mind telling me how old you are ?  
 Person2:I'm twenty-seven .  
 Person1:        And could you tell me what other jobs you have had ?  
 Person2:Yes , I have worked in a bank for the last years .  
 Person1:        And what was your salary at the bank ?  
 Person2:I got $ 500 a week . 

informal