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'.
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Question: Person1: I'm not a VIP .
Person2:You're too humble .

Answer: informal

Question: Person1: Hey , Zina . You're here early today .
Person2:Yeah , I'm going to be making phone calls all day . What a blast .
Person1: I just wanted to say thanks for putting us on the map so fast . I appreciate it .
Person2:Save it , Vince . After I put my first million in the bank , I'll say you're welcome .
Person1: Fair enough.Keep up the good work .

Answer: informal

Question: Person1: Your search on this project has been excellent .
Person2:Thank you . I couldn ' t have done it without the help of a strong team .
Person1: The final report is exceptionally thorough and well done . I think that you have been come up with some interesting recommendations for the client .
Person2:Well , I hope the client feels the same way !
Person1: I am sure they will be pleased .

Answer:
informal