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:       Good morning . This is Dr . Mustn ’ s Office . Can I help you ?  
 Person2:Yes . This is Janet Smith . I ’ d like to make an appointment with Dr . Mustn as soon as possible .  
 Person1:        Is it urgent ( an emergency ) ?  
 Person2:Yes . I ’ Ve got an infected wound .  
 Person1:        How about this afternoon at 2:00 ?  
 Person2:That ’ s fine .  
 Person1:        Don ’ t forget to bring your health card with you .  
 Person2:I ’ ll bring the card . Thank you very much .  
 Person1:        You ’ re welcome . 

formal