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:       Thanks for coming shopping with me .  
 Person2:I'm so honored that you thought to ask me .  
 Person1:        I've never given a speech in front of a thousand people before .  
 Person2:You're going to do great . And you're going to look great .  
 Person1:        Thanks . Now let's decide which one of these suits looks best for this occasion .  
 Person2:I still like the olive one best . There's a tailor here who can take up the sleeves for you .  
 Person1:        The question is , can he have it done before Friday ?  
 Person2:These guys are professional . I think they can have it done tomorrow . Let's ask . 

informal