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:       I've been looking forward to the new semester .  
 Person2:I hope we can make great progress in this new semester .  
 Person1:        Hope so .  
 Person2:I hear we ’ ll have a new English teacher this semester .  
 Person1:        Really ? I hope we will do much better under her guidance .  
 Person2:I am sure we will . 

informal