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 are your strong points ? 
 Person2:well , I ’ m very good with people . I ’ m honorable . I work hard . I work well under pressure . And I ’ m patient . 
 Person1:        what kind of people do you like to work with ? 
 Person2:I like a person who works hard . I don ’ t like lazy people . 
 Person1:        what ’ s your greatest strength ? 
 Person2:well , this is a challenging question . I suppose I would say that I ’ m a quick learner . 
 Person1:        so , you ’ re smart . 
 Person2:I think so . I think that I am good at what I do . 
 Person1:        what do you consider your weakness ? 
 Person2:I ’ m not good at speaking in public . I feel uncomfortable when I speak in public . 
 Person1:        that ’ s not a problem . It ’ s unnecessary for this position . 

formal