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:       I came in response to your advertisement for a salesperson .  
 Person2:OK , please be seated . May I have your name , please ?  
 Person1:        My name is Woody .  
 Person2:OK , Woody . Why are you interested in this job ?  
 Person1:        Because I admire your company . Yours is one of the most effective and respectable companies in this city .  
 Person2:Have you worked anywhere else before ?  
 Person1:        Yes , five years ago . I began to work in a fashion company in Shanghai . Two years ago , I came to Beijing , and worked in a department store as a salesman .  
 Person2:OK , your work experience is impressive , and I think you sound right for this position , but I do have 3 other people to interview , so you'll be hearing from us within a week .  
 Person1:        Thanks . 

formal