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:       I like hitchhiking.will you go with me ?  
 Person2:Oh , no . I don't think I'm in that good form .  
 Person1:        It's a pity.Say , how about a place near enough ?  
 Person2:To where exactly ?  
 Person1:        New England .  
 Person2:That's still too far for me . 

formal