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: Oh !
Person2:What fools we were !
Person1: To think of it ! All my old silver ! It meant so much to me .
Person2:And my new car . To think that he simply drove off with everything in my car . That's what hurts me most .
Person1: What's so terrible too , is the fools we've made of ourselves .
Person2:I hardly dare call the police . They'll just laugh at us .
Person1: I'll never get over it . Oh , Harry , it was all so unnecessary . That man ! ! How could he do this to us after we'd put him up ?
Person2:And his story didn't even hold together . I feel such an idiot .
Example Output: informal

Example 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 .
Example Output: formal

Example Input: Person1: This is the last of the milk .
Person2:I know . I intent to go to the store today .
Person1: Would you get some that new cereal we saw advertise on TV .
Person2:Which one ?
Person1: You know . The one with the silly art about how advisements have jump up and down .
Person2:Oh , you mean kikois .
Person1: Yeah , That ' s the one .
Person2:Well . I ' ll see , sometimes the store don't have some one of new kinds of cereal .
Example Output:
formal