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 . I ’ m Mickey Huang , I have an appointment with Mr wilson .  
 Person2:Is this about the Sales Assistant position ?  
 Person1:        That's right . My appointment is for 11 o'clock .  
 Person2:Mr wilson is on the line right now . Please have a seat . He'll be right with you .  
 Person1:        Thank you .  
 Person2:Can I get you something , coffee , tea ?  
 Person1:        No , I'm fine . Thank you . 

formal