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 , sir . What can I do for you ?  
 Person2:I'm Jack in Room 606 . Can you change the room for me ? It's too noisy . My friend was woken up several times by the noise from upstairs . He said it was too much for him .  
 Person1:        I'm awfully sorry , sir . I do apologize . A ten-year-old boy and a mother live upstairs . Maybe the boy is a little bit naughty .  
 Person2:Anyway , I'd like to change our room .  
 Person1:        No problem , sir . We'll manage it . 

formal