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:       The boss announces the pay raise today , right ? How much do you think we'll get ?  
 Person2:No idea . Your guess is as good as mine .  
 Person1:        It better be more than last year .  
 Person2:Well , anything is better than nothing . Wait and see . 

formal