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 , Mrs . Henderson .  
 Person2:Hi , Steven . Do you have time and chat with me ?  
 Person1:        Of course I have plenty of time . What's new ?  
 Person2:The new couple next door divorced . Have you heard about it ?  
 Person1:        No . The Hills ? Who filed for divorce first ?  
 Person2:I guess it Is Mrs Hill . She sued for divorce on the grounds of her husband's misconduct with his secretary .  
 Person1:        Oh , maybe not . It's just your guess . Do not give currency to idle gossip .  
 Person2:OK . I close my mouth . 

informal