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:       Are you going to the cafeteria downstairs ?  
 Person2:Yes .  
 Person1:        Could you please get me a takeaway ? I have some urgent work to finish . So I don ’ t have enough time to go out for lunch .  
 Person2:No problem . What should I bring ?  
 Person1:        I am not picky on food . Just bring me the day menu . 

formal