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:       Do you have s second ? 
 Person2:Sure . What do you want ? 
 Person1:        I want to tell you I've put in my notice . 
 Person2:Really ? Why ? 
 Person1:        I've been thinking about this for several months , well before the Spring Festival holidays . 
 Person2:And the holidays provided you a chance to think over all this and make a decision ? 
 Person1:        Yeah , after receiving my yearly bouns , I want to search out better opportunities in the spring job market . I've been working in the company for nearly a year and a half and I still haven't received a pay rise . It's unfair . 
 Person2:Absolutely . With your expertise and experience , you're clearly working below your pay grade . 
 Person1:        That's exactly why I decided to quit the job and find a new one . 

informal