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:       How ’ s it going ?  
 Person2:I ’ m fine , thank you .  
 Person1:        Did you need help with something ?  
 Person2:If I could , I would like to view the apartment sometime today .  
 Person1:        That won ’ t be possible today .  
 Person2:Why is that ?  
 Person1:        You can only view the apartment with an appointment .  
 Person2:I would like to make one right now if I can .  
 Person1:        Are you available this Friday ?  
 Person2:Can we do it at 6 o ’ clock ?  
 Person1:        Your appointment for Friday at 6 pm has been confirmed .  
 Person2:All right . I ’ ll see you on Friday . 

informal