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'.

Example Input: Person1: I like hitchhiking.will you go with me ?
Person2:Oh , no . I don't think I'm in that good form .
Person1: It's a pity.Say , how about a place near enough ?
Person2:To where exactly ?
Person1: New England .
Person2:That's still too far for me .
Example Output: formal

Example Input: Person1: I Don't know how they do it ! Our competitors have undercut us by 10 % percent on the price of our latest model . There is no way will be able to compete against that . We're barely breaking even with the present prices .
Person2:These price wars are disastrous for our bottom line . If they're charging 10 % less than we are , we've got to find a way to lower our price while keeping our profit .
Person1: Profits are almost nonexistent now , we can't beat their price . How do they keep their price so low ?
Person2:We can try to lower our cost of production then . We need a price that we can compete with , something comparable with the competition .
Person1: You really think we can make it ? I don't have much faith in our ability to lower the price again . We're no match for them , the competition will beat us hands down .
Example Output: formal

Example Input: Person1: Would you like to go skating with me this afternoon ?
Person2:Oh , I'd love to . But we're going to clean our dormitory . I can't be absent .
Person1: Maybe another time . People say that boys ' dormitories are in a mess , is it true ?
Person2:In fact , our dormitory is much worse than they can be described .
Person1: It's hard for me to imagine . How can you stand that ?
Person2:You'll get used to it gradually .
Person1: Oh my God , don't you know that such living environment is not healthy ?
Person2:Yes , we do . That's why we have a cleaning every three months .
Person1: Three months ? Incredible !
Example Output:
informal