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:       What reason do you have for missing school ?  
 Person2:I was sick .  
 Person1:        How were you sick ?  
 Person2:I had a stomachache .  
 Person1:        Did it get any better ?  
 Person2:I'm still feeling under the weather .  
 Person1:        Would you like anything for your stomach ?  
 Person2:I took something earlier .  
 Person1:        Get better .  
 Person2:Thanks a lot . 

informal