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: Do you know that John isn't going to come back to our school ?
Person2:Really ? Why ?
Person1: He had moved and held a party on July 1st .
Person2:It's a pity that I was traveling around Europe at that time .
Person1: Even he's not coming back to school anymore , you still can call him and meet him on weekends .
Person2:You're right ! I will call him this weekend and meet him .

Output: informal

Input: Consider Input: Person1: Kevin ? Hi , it ' s Elizabeth . I have a big favor to ask you .
Person2:How big , Elizabeth ? Last time you said that , I ended up working overtime 3 nights in a row !
Person1: Well , I ' Ve got a huge load of typing and Mr . Blake has insisted I get it done by tomorrow afternoon .
Person2:All right , Elizabeth . But this is the last time .

Output: formal

Input: Consider Input: Person1: Where are you going ?
Person2:I have to go to work .
Person1: Going to work where ?
Person2:I ' m working at the polling place .
Person1: I didn ' t know you were working there this year .
Person2:I work at the polling place every year .
Person1: How did you get that job ?
Person2:I signed up for it online .
Person1: That ' s really cool .
Person2:It ' s a very cool job .
Person1: Do they pay you a lot ?
Person2:They pay well enough .
Output: informal