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:       What stresses you out the most ? 
 Person2:Probably my parents . 
 Person1:        How so ? 
 Person2:Well , during school , they wanted good grades . Then after I got a job , they wanted me to get a better job . And finally , they want me to get married . 
 Person1:        You have to deal with a lot of pressure from your parents . 
 Person2:Your parents are not like that ? 
 Person1:        Ever since I brought home some bad grades in elementary school , they never expected much . 
 Person2:You're lucky . 
 Person1:        What do you do to deal with the stress ? 
 Person2:Not much I can do . It's always there . I sometimes go out with some friends and drink , but that's only a temporary solution . The stress always returns in the morning . 
 Person1:        That sucks . You wanna go grab a beer ? 
 Person2:Sure . Sounds great . Let's go . 

informal