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:       Wedding rings ! 
 Person2:Oh , no ... 
 Person1:        Aren't they cool ? I like the settings . 
 Person2:Jen , is there someone you're not telling me about ? 
 Person1:        No . I just like looking at wedding rings , OK ? 
 Person2:Women are such dreamers . 
 Person1:        These are specially designed for the year 2000 ! 

informal