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:       I'm afraid I spilled coffee on the tablecloth .  
 Person2:Oh , never mind . I am just going to do the laundry today .  
 Person1:        I want to apologize . Is there anything can do for you ?  
 Person2:It really doesn't matter at all . I never did like it anyway . 

informal