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:       Hi , again . Can I get you some more fruit ? 
 Person2:Actually , I don't think I can eat another bite ! 
 Person1:        OK . I'll go then . 
 Person2:Actually , I think we want to pay our bill . 
 Person1:        If you give me your credit card , I can take care of it for you . 

informal