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:       Hi Joe . You met my new assistant , right ?  
 Person2:Emm ... yes . But I wasn't too impressed . I found her a little stuck up .  
 Person1:        You are kidding , but she's so helpful .  
 Person2:Tom ... you are her boss , you kown.Of course , she's helpful to you .  
 Person1:        Come on . She's like that with everyone .  
 Person2:I don't think so actually . She never even says " hello " to me . 

informal