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:       How are you feeling , champ ? Ready to go ?  
 Person2:You know , if I can keep up my workouts , I think I have a chance in 2004 .  
 Person1:        In what ?  
 Person2:In gymnastics . I'm pretty flexible . Look ! I can even touch my toes !  
 Person1:        Can you do the vault ?  
 Person2:I do back flips at the pool all the time . 

formal