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:       hey , the new SOHO . How's everything going ?  
 Person2:everything's great . I've just returned from my office .  
 Person1:        your office ? Aren't you a freelancer ?  
 Person2:sure I am . I work for myself , but I've rented a virtual office at an office building in the downtown area .  
 Person1:        a virtual office ?  
 Person2:yeah , an office that runs efficiently by using nothing other than online communication technologies . I pay the rent and share office services with others in the same building .  
 Person1:        what kind of services do they offer ?  
 Person2:a separated office , internet access , phone services , fax services , mail & courier services , and almost everything you have in a conventional office .  
 Person1:        sounds fun.what else ?  
 Person2:I get a business address at an expensive location , and I can share the receptionist and secretary with other offices in the same floor .  
 Person1:        oh , that helps a lot to promote your corporate image .  
 Person2:you bet it ! 

formal