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:       when are you going to give me those brochures ?  
 Person2:What ’ s the rush ? You ’ re not leaving for another week .  
 Person1:        I know , but I want to make reservations this week .  
 Person2:Okay . I ’ ll bring them in tomorrow for sure . 

formal