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 John , nice skates . Are they new ? 
 Person2:Yeah , I just got them . I started playing ice hockey in a community league . So , I finally got myself new skates . 
 Person1:        What position do you play ? 
 Person2:I ’ m a defender . It ’ s a lot of fun . You don ’ t have to be able to skate as fast on defense . 
 Person1:        Yeah , you ’ re a pretty big guy . I play goalie , myself . 
 Person2:Oh , yeah ? Which team ? 
 Person1:        The Rockets . 
 Person2:Really ? I think we play you guys next week . Well , I have to go to practice . See you later . 
 Person1:        All right , see you later . 

informal