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:       It's awfully quiet around here . 
 Person2:Yeah . There's nobody in sight . 
 Person1:        I have a feeling that we're not supposed to be in here . 
 Person2:I think you're right . Let's go . 

informal