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:       You'd like coffee , wouldn't you ?  
 Person2:I think I'd rather have tea this morning .  
 Person1:        What else are you going to have ?  
 Person2:Just an English muffin . What are you going to have ?  
 Person1:        That sounds good . I'm going to order the same thing . 

informal