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:       How do you think about our boss ? 
 Person2:He's the nicest boss I've had . 
 Person1:        Yes , I think he's the most relaxing person in management . 
 Person2:What's more , he said I was the hardest working person in the office ! 
 Person1:        That's good . Maybe you'll get promoted . 
 Person2:I hope so . 

informal