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:       How is your job search going , Janet ?  
 Person2:I found the ideal position . I ’ m working for a plumbing company .  
 Person1:        Are you serious ? You studied mathematics at college for four years , and now you have a job working with your hands !  
 Person2:Plumbing work requires mathematics knowledge , and creativity . I love this job .  
 Person1:        I can see that . But I didn ’ t know you had experience in that line of work .  
 Person2:I didn ’ t , but I applied for an apprenticeship , and since I studied math , AND I have a good attitude , my application was accepted .  
 Person1:        Congratulations ! You do have the right attitude . 

informal