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:       What's the bonus like at your company ? 
 Person2:Well , it's OK , I suppose . We get about the equivalent of six months ' salary . 
 Person1:        Six months ' salary ? Are you serious ? That's incredible ! 
 Person2:Maybe . But you'd be amazed at how little's left after the credit companies have deducted their share from my account . 
 Person1:        Hey , I know what that's like . I bought a BMW on my Visa card . Now the payments really hurt . 
 Person2:Well , you're lucky that you're still able to make your payments . I missed a credit payment last month . Now my bank account's overdrawn , and the company is threatening to take back my purchases . 
 Person1:        What did you buy ? 
 Person2:A new home health monitor . 
 Person1:        Health Monitor ? I read an article about that racket.They ' re overpriced to begin with ! Listen , if I were you , I'd let them take back their monitor and spend my money on something more practical . 
 Person2:You're kidding ! 
 Person1:        No joke ! 
 Person2:That's something else ! Maybe I'll return it to them . 

informal