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:       John seems to be in high cotton . He may well become a big shot .  
 Person2:I bet my button dollar that he won't . He is no more than a nine day's wonder .  
 Person1:        What is your idea ?  
 Person2:Many people like him get a flying start but soon disappear . 

formal