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'.

[Q]: Person1: I haven ' t met Bob for years . How is he ?
Person2:He has been keeping bach after divorce .
Person1: He would have recovered from the stress and got married again .
Person2:Once bitten , twice shy . He said he would rather keep bach than to live in disgust .
[A]: formal

[Q]: Person1: Mom ! How can I help with the washing up ?
Person2:You peel the onions and wash them , then chop them .
Person1: OK ! Then what can I do after I finish it ?
Person2:Let me see . Wash the cabbage over there .
Person1: OK , got it .
Person2:What is your father doing now ?
Person1: Reading newspaper on the couch .
Person2:How about Daniel ?
Person1: Staying with Ultraman , of course . You know he likes it very much .
Person2:Be careful of the peeler . Don't cut your fingers .
Person1: I will .
Person2:OK , we've finished . Can you get your father and brother ?
Person1: OK !
[A]: informal

[Q]: Person1: Your husband is very helpful , isn't he ?
Person2:Willing to help , maybe , but not as helpful as you think .
Person1: Really ?
Person2:Last night he told the children acliff-hangerstory and both of them were scared out of sleep .
[A]:
informal