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:       Where do you work , Andrea ?  
 Person2:I work for Thomas Cook Travel .  
 Person1:        Oh , really ? What do you do there ?  
 Person2:I'm a guide . I take people on tours to countries in South America , like Peru .  
 Person1:        That sounds interesting !  
 Person2:Yes , it's a great job . I love it . And what do you do ?  
 Person1:        I'm a student , and I have a part-time job , too .  
 Person2:Oh ? Where do you work ?  
 Person1:        In a fast-food restaurant .  
 Person2:Which restaurant ?  
 Person1:        Hamburger Heaven . 

informal