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:       These things are always oooo boring . Heard any gossip ? Anybody making the big bucks ?  
 Person2:Rich struck it rich in advertising . And he and Cath got married and just had a child .  
 Person1:        That's no news . Those two were high school sweethearts anyway .  
 Person2:Teresa Jones got a boob job .  
 Person1:        Uh , I can see that . And Erica Falls has lost a lot of weight .  
 Person2:I've got something . You saw Taylor Smith ? Looks terrible , doesn't he ? I heard he ... 

formal