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 don ’ t think I can take another semester of this dorm food . 
 Person2:I know what you mean , it leaves a lot to be desired . 
 Person1:        Sure , like taste , variety , nutritional value , what I should do is move into an apartment off campus where I can cook for myself . 
 Person2:Have you found anything yet ? 
 Person1:        You know how hard it is to find a decent place at this time of year ? 
 Person2:You should be able to find something comfortable in town , though that would be kind of far from school . 
 Person1:        I got a car , so the distance wouldn ’ t really be a problem . 
 Person2:But the parking might be . 
 Person1:        You bet ! 

informal