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'.

Ex Input:
Person1: Annie , what is troubling you ? You look unhappy .
Person2:A man is pursuing me . He was my schoolmate in college , and he has been carrying a torch for me for three years .
Person1: Do you like him ?
Person2:Yes , I do like him .
Person1: Then why are you hesitating ?
Person2:You know that I have had a series of miserable relationships . Last summer , I fell in love with John . But the romance blossomed for six or seven weeks , and then wilted .
Person1: One love drives out another . You shouldn't be afraid to start a new relationship .
Person2:Maybe you are right .

Ex Output:
informal

Ex Input:
Person1: But Sue is indeed beaut . Men can hardly resist such a knock-out .
Person2:Birds of feather flock together . You must be one of these men .
Person1: I know little of her . I only think she ' s pretty and intelligent . Of course , she ' s diligent , too .
Person2:That ' s enough for you to worship the ground she treats on .

Ex Output:
informal

Ex Input:
Person1: Well , you know what , don ' t do it , ' cause the minute you do , they lose all respect for you .
Person2:Well , it ' s not like that . We just e-mail , it ' s really nothing . On top of which I am definitely thinking about stopping because it ' s getting ...
Person1: Out of hand .
Person2:Confusing . But not , because it ' s nothing .
Person1: Where ' d you meet him ?
Person2:Oh , listen , I can ' t even remember . Ok , on my birthday , I wandered into over 30 rooms , for a joke , sort of and he was there , and we started chatting ...
Person1: About what ?
Person2:Oh , books , and music , how much we both love New York . Harmless , harmless , meaningless . Bouquets of sharpened pencils . Oh .
Person1: Excuse me ?
Person2:Forget it . We don ' t talk about anything personal , so I don ' t know his name or what he does or where he lives exactly . So it ' ll be really easy for me to stop seeing him , because I ' m not ...

Ex Output:
formal