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 would like to place an order . 
 Person2:Alright , Ma'am . What items would you like to order today ? 
 Person1:        I have your catalog here . Do you want me to tell you the item numbers , or the names ? 
 Person2:You may tell me both , Ma'am . 
 Person1:        Alright . I want to order the satin sheets on page 28 . 
 Person2:The Merriman satin sheets ? 
 Person1:        Yes , that's right . 
 Person2:And what size would you like ? 
 Person1:        I need one full set of sheets in King-size . 
 Person2:Alright , Ma'am . And what color did you want ? 
 Person1:        Ivory , please 
 Person2:So that is product number MS2119 , Size 
 Person1:        Yes , I think so . Can I ask you something ? 
 Person2:Certainly . 
 Person1:        I'm a foreigner here . My English isn't perfect . Can you tell me what satin is ? 
 Person2:Satin is like silk , Ma'am . It feels like silk . But it's a different material . 
 Person1:        I see . That's what I thought . 
 Person2:Anything else today ? 
 Person1:        No , I just need the sheets . 
 Person2:Alright . With shipping charges , your total will be 68 dollars . Will you be paying with credit ? 
 Person1:        Yes . 
 Person2:Visa , Master Card , or American Express ? 
 Person1:        Visa . 
 Person2:Card number ? 
 Person1:        8825 1127 4235 9869 . 
 Person2:Expiration date ? 
 Person1:        July , 2006 . 
 Person2:All right , Ma'am . I will run that charge for you . And then I will get your address in a moment 
 Person1:        Thank you . 

informal