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'.

Input: Consider Input: Person1: Hey ! Fred , you are five minutes earlier than me today . Usually , you don't .
Person2:Hurry ! It is time for me to steal something .
Person1: What's your meaning ?
Person2:I am stealing vegetables at the Happy Farm .
Person1: You are a thief ?
Person2:No , no . I mean stealing vegetables on Internet is very popular now . Many white collars join in this game and have a lot of fun by stealing others ' vegetables .
Person1: You mean it is a still virtual game . Your friends steal your vegetables time and time again , and you take theirs as well , right ?
Person2:You got what I meant . Perhaps , what I steal are not vegetables , but loneliness .
Person1: Don't be addicted to the game . It's not good for your job .

Output: formal

Input: Consider Input: Person1: Lisa , can I call Taiwan ?
Person2:Are you homesick ?
Person1: I miss my parents .
Person2:Don't worry about the bill . Just call .
Person1: Can you show me how to make an overseas call ?
Person2:Of course . First dial the code 011 to get an international line . Then you dial Taiwan's country code
Person1: That's 886 .
Person2:Now you should know the rest . Don't forget to dial Taipei's city code .

Output: formal

Input: Consider Input: Person1: did you get my email ?
Person2:I certainly did . Do you want to come in and give me some feedback about your weekend ?
Person1: sure .
Person2:how did the business trip go ?
Person1: well , to be honest , nothing is more stressful than going on a business trip with our boss .
Person2:I understand . The last time I went on a business trip with the boss , I didn't even have enough to eat !
Person1: I also think the company is pretty cheap with travel expenses . I spent half of the weekend on a train ! Surely they could have afforded to buy a few plane tickets !
Person2:our company is quite conscious of the environmental problems that frequent flying causes .
Person1: I see . Well , then perhaps they could give me a few days off after a business trip . It was really tiring for me .
Person2:I can ask the boss about giving you the day off today .
Person1: thank you . I can't imagine getting much done today . I'm just too exhausted !
Person2:no problem . Did you bring any gifts back for your department ?
Person1: no , should I have ?
Output: informal