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: I ' d love to have my own farm .
Person2:It would be very hard work . Are you sure ?
Person1: I wouldn ' t mind getting up early morning and the physical work would make me fit and healthy .
Person2:Running a farm would be totally different to you current job .
Person1: That ' s one reason I ' d like to try it . I ' d really like to get away from working 9 to 5 in an office .
Person2:You ' d need a lot of training before becoming a farmer . It ' s not something you can just walk into .
Person1: My uncle owns a farm and I ' Ve spent some time working with him . I love being in the countryside with farm animals and green fields .
Person2:Well , I ' d certainly come and visit you . It would be great to take a working holiday on a farm . I ' d love to get away from hustle and bustle of the city for a while .

Ex Output:
formal

Ex Input:
Person1: When the rain stops , you ' ll see how beautiful the beach is .
Person2:But the rain has been pouring down for two days . We ' Ve both caught colds .
Person1: And this bedroom is too big and damp . But it ' s better than a tent .
Person2:How unlucky ! Let ' s pack our bags and go home .

Ex Output:
informal

Ex Input:
Person1: May I see your airplane ticket , passport and health certificate please ?
Person2:Here you are .
Person1: Will you please put your luggage on the scale ?
Person2:I want to check these three pieces and I'll carry this overnight bag by myself .
Person1: Sir , your bags are 30 pounds over weight . You are allowed only 45 pounds of baggage .
Person2:Well , then , how much do I owe you ?
Person1: That comes to H . K . $ 120 .

Ex Output:
formal