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:       So , how's your work ?  
 Person2:Good . How about you ?  
 Person1:        I am going to resign . A few of the new staff have already left . Obviously , a lot of similar jobs pay much better salaries .  
 Person2:But your company is huge . Can't they afford to pay the staff decent wages .  
 Person1:        But we have a policy of paying according to seniority in the company , so new employees get quite low salary , no matter how excellent they have done .  
 Person2:That's shortsighted . By the time the workers are experienced and contributing . They are likely to go .  
 Person1:        That's why I am going to leave .  
 Person2:But you have already worked there for five years .  
 Person1:        I am worried about my future . I can't believe that our company is as big as it is . The company can only continue to grow by taking care of its staff .  
 Person2:Well . The management doesn't seem to think that way . Anyways , you have to think twice before you act .  
 Person1:        Thank you . I will . 

formal