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:       Mary , why are you so tired ?  
 Person2:I go to the personnel market every day , and put a lot of energy into it .  
 Person1:        Why don't you think about applying for a job on the Internet ?  
 Person2:On the Internet ? I have never tried that way .  
 Person1:        Well , it's very convenient and very popular now .  
 Person2:So how to apply for a job on the Internet ?  
 Person1:        Just get online and send your application through email to the employer .  
 Person2:But how can I know which employer is hiring ?  
 Person1:        You could place your job hunting information on the Job Wanted channel on a recruitment website .  
 Person2:Will the employers see my information ?  
 Person1:        Yes . If they think you are a fit , maybe they will contact you .  
 Person2:Is it safe to job hunt on the Internet ?  
 Person1:        If you log in some formal websites , it must be very safe .  
 Person2:I will give it a try at once . 

formal