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:       Being a diabetic , you're not allowed to eat certain foods .  
 Person2:Am I allowed to eat spicy food ?  
 Person1:        I'm afraid not .  
 Person2:Really , because spicy food is my favorite . 

informal