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:       Mary ? Are you still there ?  
 Person2:Yes . What do you want ?  
 Person1:        Did your bid win ?  
 Person2:What do you care , dork ?  
 Person1:        Hey ! I'm trying to be nice , and you still want to fight ! Did you get the statue or not ?  
 Person2:You mean fat boy ?  
 Person1:        Sorry . I take that back . I mean the copper Buddha you wanted . 

formal