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:       So how was your interview ?  
 Person2:I haven't gone to the interview yet . It's tomorrow . I am so nervous .  
 Person1:        Don't worry . You should do fine . You have the experience .  
 Person2:I hope so .  
 Person1:        Remember , they want someone who works well with people . You've got to show them how easy-going and personable you are .  
 Person2:Thanks , I'll keep that in mind . 

informal