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:       Come on , darling . We haven't got much time . 
 Person2:All right . I'm nearly ready . What time does the bus leave ? 
 Person1:        Half past six ... and it's half past six already . 
 Person2:Oh , we've got plenty of time . 
 Person1:        We haven't . Hurry up ! 
 Person2:All right . Let's go . 
 Person1:        And about time too ! 

formal