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:       Hey ! How was your first day of class ? I ’ m in level two and I ’ m loving my class this semester ! It ’ s great being in a class of international students ! 
 Person2:Mine was ok , except that no one in my class speaks English . I guess it will force me to converse in Chinese more in class so at least I should improve a lot this semester . 
 Person1:        That ’ s both fortunate and unfortunate . It ’ s the United Nations in my class ! We have people from all over the world ! There are three Germans , a Pole , a Scottish , two French , an American , a Brazilian , a Chilean , a New Zealander , though he prefers to call himself a Kiwi . Who else do we have ? Oh , we also have a Moroccan , a Togolese , a Pakistani , and two Indonesians ! 
 Person2:That ’ s quite the array of nationalities . Everyone in my class is from Asia , except me . There are a few South Koreans , several Japanese , Malaysian , Thai , Singaporean , Filipino , Kazakhstan , and one Russian . 
 Person1:        Well , I think you ’ re pretty lucky actually . You ’ ll have the opportunity to learn so much about Asian culture . 
 Person2:I guess so , but I think it ’ s going to be hard to relate to my classmates , especially with the language barrier . I think I might change classes . 
 Person1:        Don ’ t ! Stay the course ! Your spoken Chinese will be eternally grateful . I bet you it will even surpass mine with all that practice . 
 Person2:I highly doubt it . Your girlfriend is Chinese . 
 Person1:        Well , there is that , yes . 

formal