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:       So Janet , do you do any sports ? 
 Person2:Well , I go to the gym a lot . I am a member of a gym nearby . 
 Person1:        Yeah , how often do you go ? 
 Person2:About three times a week if I can . 
 Person1:        Not bad ! Do you do any other sports ? 
 Person2:Not really . I ’ d really like to try golf , though . 

formal