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:       I've heard that you provide very good service , so when I need a mover , I call you guys first .  
 Person2:Thanks a lot for calling us . Could you tell me more about what you need us to do ?  
 Person1:        Oh , you see , we are on the 8th floor , and moving into the 6th floor in another building . It is about 15 kilometers to get there .  
 Person2:OK , the cost depends on the floor to move to , the distance between two places and the amount of the furniture to move .  
 Person1:        How much will it cost in that case ?  
 Person2:Oh , let me see . It fits the second standard rates . Have a look at the contract , please .  
 Person1:        Your charge is divided into two parts , the Payment in Advance and the rest . I thought that I should pay all of it before moving .  
 Person2:No , firstly we sign the contract ; you pay 50 % of what it costs , and the rest when we finish moving .  
 Person1:        The damage and compensation item confuses me . Could you give some explanation ?  
 Person2:OK . If any of the articles was damaged during moving , you may make a claim for compensation with our department . 

informal