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:       Why don ’ t you sit down and relax , darling ? 
 Person2:I don ’ t want to . 
 Person1:        Well , come and talk to me then . 
 Person2:Certainly not . 
 Person1:        May I turn on the radio then ? 
 Person2:Turn on the radio ? What for ? 
 Person1:        So that we can sit down together and listen to some music . 
 Person2:Listen to some music ? And who ’ ll cook dinner ? Will you ? 
 Person1:        Ok , I will . But let ’ s go to a disco after dinner . 
 Person2:To a disco ? Oh , no . You know I hate pop . 

informal