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: I am not sure what to do to get ready for my job interview .
Person2:Make sure that you understand the company . Do you understand what it is that they do ?
Person1: No , I probably need to do some more research .
Person2:When you've finished your research it will help you figure out whether your company is rigid in philosophy or kind of more relaxed . Does that make sense ?
Person1: I think that their attitude is rather casual .
Person2:So all of that information will help you to pick out what to wear . Do you have something to wear ?
Person1: I have absolutely nothing so far .
Person2:You know I could go shopping with you sometime if you need it , but can we talk about other basics ?
Person1: Yes , where should we go from here ?
Person2:Focus on being relaxed and open , don't forget to smile and shake hands and be genuinely interested in what their company is about . I'm sure you'll do well .

Ex Output:
formal

Ex Input:
Person1: Did you make it to school today ?
Person2:I always do . Did you go to school today ?
Person1: No , I didn't .
Person2:You should have , but have you seen any movies lately ?
Person1: That was an odd change of subject .
Person2:Maybe it was , but answer the question .
Person1: No , not recently .
Person2:I want to go to see a movie this weekend .
Person1: What's stopping you then ?
Person2:I don't want to go alone .
Person1: So , will you be at school tomorrow ?
Person2:No , I want to go to the movies instead .

Ex Output:
formal

Ex Input:
Person1: Whose handset sounds so beautiful
Person2:Mine . It's My Heart Will Go On , the theme song of Titanic . Isn't it of strong character ?
Person1: Are you able to compose music ?
Person2:No , not yet .
Person1: Who composed it for your ?
Person2:You needn't ask anyone . You can get on line to search for one .
Person1: Can I get on line to search one , too ?
Person2:Yeah . Web sites provide many melodies for handsets like my ERICSSON .
Person1: What about my SIEMENS ?
Person2:Numerous . It's time that everybody is particular about personality.Find one and change yours .

Ex Output:
informal