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: Consider Input: Person1: If one is rich , is the happy ?
Person2:I don't think so.It ' s impossible to equate wealth and happiness .
Person1: Could I understand what you said as the poorest is the happiest ?
Person2:Of course not.Sometimes a poor man can be extremely miserable .

Output: formal

Input: Consider Input: Person1: This is the good life ! We have it good don ' t you think ?
Person2:Yeah of course ! Although , don ' t you ever wonder what " could have been " ?
Person1: What do you mean ?
Person2:Well , sometimes I think of how things could have turned out if I had done things a little differently .
Person1: For example ?
Person2:Like for example , if I hadn ' t studied architecture , I would have become an artist like I wanted to .
Person1: I see . Yeah now that I think of it , I wouldn ' t have gotten married if I hadn ' t moved to this town and met Sally .
Person2:You see ! Everything happens for a reason ! We wouldn ' t even have met if I hadn ' t been in that car accident ten years ago !
Person1: Well , I have no regrets !
Person2:I ' ll drink to that !

Output: informal

Input: Consider Input: Person1: Excuse me . I've been waiting here for 15 mins . Do you know how often does No . 3 run ?
Person2:Oh , it runs every 20 mins . You must have missed it , when you came here . It should be here any minute now .
Person1: It seems that you have got here at a good time . Do you have a bus schedule ?
Person2:Yes , I do . You can go to the Transport Department to get yourself a bus schedule and a bus route map .
Person1: I see , thank you .
Output: formal