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 want to buy some meat . 
 Person2:What kind would you like ? 
 Person1:        I want one pound of ground beef . 
 Person2:That's going to be about $ 2.48 . 
 Person1:        That will be fine . 
 Person2:What else can I get for you ? 
 Person1:        Let me also have three pounds of chicken breasts . 
 Person2:That's going to be $ 4.05 a pound . 
 Person1:        Can you tell me the total cost of the chicken breasts ? 
 Person2:That will be $ 12.15 . 
 Person1:        That's all I'm going to get today . 
 Person2:That's fine . Let me get your meat . 

informal