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:       Do you think they two will get married ?  
 Person2:You can count on it .  
 Person1:        I think so.Yes , they get along so well .  
 Person2:I like him.He ' s good for her .  
 Person1:        You're right . He sure is . 

informal