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 really want to get something to eat . 
 Person2:What are you going to get ? 
 Person1:        I don't know what I want to eat . 
 Person2:Well , do you want burgers , Chinese food , or Mexican food ? 
 Person1:        Chinese food sounds good . 
 Person2:Where are you going to get it from ? 
 Person1:        I haven't the slightest idea . 
 Person2:I usually get my Chinese food from Panda Express . 
 Person1:        You like Panda Express ? 
 Person2:The food there is actually pretty good . 
 Person1:        Maybe I'll go there then . 
 Person2:You should . I know you'll like it . 

informal