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'.

[EX 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 .
[EX A]: formal

[EX Q]: Person1: Here's the picture of my family .
Person2:Can you point out your mother for me ?
Person1: OK.She ' s near-sighted , with a pair of glasses on her nose.She is the only one wearing glasses in my family .
[EX A]: formal

[EX Q]: Person1: What time is it , Tom ?
Person2:Just a minute . It ' s ten to nine by my watch .
Person1: Is it ? I have no idea if I ' m so late . I must be off now .
Person2:What ' s the hurry ?
Person1: I must catch the nine-thirty Train .
Person2:It ' s plenty of time yet . The railway station is very close . It won ' t take your twenty minutes to get there .
[EX A]:
formal