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 Input:
Person1: Hi , Mary , it ' s been a long time
Person2:Hello , my old friend . Long time no see . How are you doing ?
Person1: Well , I ' m doing okay . And how about yourself ?
Person2:Not so well . To be honest with you , I broke up with Tom .
Person1: Oh . I ' m sorry to hear that . What happened ?

Ex Output:
formal

Ex Input:
Person1: What can I do for you today ?
Person2:I need to return a book .
Person1: Can I do anything else for you ?
Person2:I want to check this magazine out .
Person1: We don ' t allow people to check out magazines .
Person2:Why not ?
Person1: It ' s just a policy of ours .
Person2:So what am I allowed to check out ?
Person1: You may check out books or videos .
Person2:I need to check out this magazine .
Person1: You will have to just read it in the library .
Person2:That doesn ' t make any sense .

Ex Output:
informal

Ex Input:
Person1: How are you getting along with your wife now ?
Person2:What can you expect ? Not that good .
Person1: What are you going to do then ?
Person2:Just let it go .
Person1: How are your work now ?
Person2:Not bad , just let it go .

Ex Output:
formal