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'll help you , Lucy . Look at what I've got here . In this small bottle , there's a magic love potion .  
 Person2:A magic love potion ?  
 Person1:        Yes . If you put a few drops on someone's eyelids while he's asleep , he'll fall in love with the first person he sees when he wakes up .  
 Person2:It can't be true .  
 Person1:        Take my word for it .  
 Person2:So what am I going to do ?  
 Person1:        Just come to our house and stay over . You'll sit by his bed and greet him like a beautiful red rose , ' Good morning ! '  
 Person2:That sounds like a blue rose ! My sitting by his bed ?  
 Person1:        Don't be so shy , Lucy . 

informal