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:       Good morning , Mr.Black . I am the new secretary .  
 Person2:Good morning , Miss White . You are half an hour early .  
 Person1:        I don't want to make a bad impression .  
 Person2:Come on over . This is your desk , and this is your time card . Be sure to clock in and out before and after you work .  
 Person1:        I will .  
 Person2:One more thing , keep your desk neat . It's the rule . There is no exception , even the art designers have to keep their desks neat .  
 Person1:        I'll keep that in mind . Does everything on the desk belong to me ?  
 Person2:Not belong . You can use them as long as you work here . When you quit , you ’ ll have to return them to the company .  
 Person1:        What's the extension number for my phone ?  
 Person2:The operator will put all your calls through . You don't have to worry about that .  
 Person1:        Can I make personal phone calls during my office hours ?  
 Person2:Of course you can . Every one has his personal matters to deal with more or less , but don't chat over the phone . What's more , don't let it hinder your work and the company's business .  
 Person1:        I understand .  
 Person2:When you settle down , I'll show you around and introduce you to the department managers . 

formal