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:       Going to the cafeteria ?  
 Person2:No , I am not eating there anymore . I have ordered my favorite food in the restaurant around the corner . The food served in the cafeteria is not my type . I am a total meat lover . But the cafeteria is doing its best to force me to be a vegetarian . They have been serving the Chinese cabbage and white gorse for three days . Haven ’ t you noticed that ?  
 Person1:        That ’ s fine with me . I don ’ t hate vegetables and I don ’ t eat much during lunch .  
 Person2:Well , then the cafeteria suits you best . But anyway , if you like to have a lunch outside the company , feel free to join me anytime . 

formal