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:       Jacob , are you interested in helping me out and going on a blind date with a friend of mine ? 
 Person2:That depends . What does she look like ? 
 Person1:        Well , she's got a beautiful face and long curly red hair . 
 Person2:How tall is she ? 
 Person1:        She's fairly tall , maybe 2 inches taller than me . 
 Person2:Is she chubby ? 
 Person1:        Not at all . She's actually very athletic . 
 Person2:It sounds like she's pretty good-looking . Does she wear glasses ? 
 Person1:        No , but she does wear contact lenses . 
 Person2:How's her skin ? 
 Person1:        She's got a gorgeous complexion with a few freckles on her nose . 
 Person2:Does she have any piercings or tattoos ? 
 Person1:        I think she has her ears pierced and she definitely has a few tattoos , one on her lower back , one on her neck , and one on her left foot . 
 Person2:What's the tattoo on her foot like ? 
 Person1:        It's a butterfly---everyone in her family has one . 
 Person2:Even her mother ? 
 Person1:        Yes , even her mother . 
 Person2:What's her personality like ? 
 Person1:        She's a lot like me . 
 Person2:So there is something wrong with her ! It was beginning to sound like she was too good to be true ! 

formal