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: I'm really sorry , Bob . I accidentally damaged your bike .
Person2:Uh-oh . It'll probably cost a lot to fix it .
Person1: I'll make it up to you . Let me know how much it costs and I'll give you the money .

Output: informal

Input: Consider Input: Person1: Did you hear the news ? Two of our major suppliers , Murphy Music and U-Tunes are merging ! If they are conglomerated into one company into one company , it would have some serious affects on our market strategy .
Person2:Are you sure ? Who told you that ? I highly doubt that they would take the step to merge into one company ... They're supposed to be bitter enemies , the strictest of competitors.It must be a rumor.It can't be true .
Person1: I read it myself on the financial page.They ' re really going to join together . U-Tunes was bought out by Murphy's , they will take over the company as of next month .
Person2:The competition must have been too stiff for U-Tunes.Otherwise why would they allow themselves to be taken over by their sworn enemy ?
Person1: I guess they must have figured it would be easier to merge than to keep up the cutthroat competition.If you can't beat'em , join'em .

Output: informal

Input: Consider Input: Person1: If I won the Pools , I'd go round the world .
Person2:Would you ? I wouldn't .
Person1: What would you do ?
Person2:Oh , I don't know . I'd buy a big house with a garden for my wife and kids , I suppose . But it's difficult to imagine having a lot of money .
Person1: One thing's certain . If I had a lot of money , I wouldn't work any more .
Person2:Wouldn't you ? What would you do with all that spare time ?
Person1: As I said , I'd go round the world .
Person2:What would you do after that ?
Person1: Oh , I don't know . It'd take me a long time to go round the world .
Person2:It doesn't sound very exciting .
Person1: Anyway , we haven't won the Pools , and we're not likely to win them . So there isn't much point in talking about it , is there ?
Person2:I'd be happy if I got a rise .
Person1: And my wife would be happy if I bought her a mink coat .
Person2:Well , I'm not likely to get a rise and you haven't the money for a mink coat , so let's come down to earth and have another drink .
Person1: What'll you have ?
Person2:I'll have a pint of the best .
Person1: I'd have a Scotch if I were you . We deserve it .
Person2:All right . Make it a double , will you ?
Output: formal