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:       Hi , Jim ! When did you get back ?  
 Person2:Yesterday . I was really sorry to see it end . The skiing was terrific !  
 Person1:        I ’ m really jealous ! I won ’ t be able to get any time off for at least another three or four months .  
 Person2:Sorry to hear that ! But I would definitely recommend this place ! 

informal