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:       Maybe you'll get another chance at the statue .  
 Person2:I don't think so . Did you ever go and look at your stamp ?  
 Person1:        And let them ruin my life ? Forget it !  
 Person2:But you've been looking for that stamp for years .  
 Person1:        It's not worth it . Besides , I have to save up to pay for some bills .  
 Person2:Bummer . I guess we're both out of luck .  
 Person1:        Yeah . Well , I'll see you this weekend . 

informal