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'.

Person1: One family skeleton of my family was that my younger brother has an axe to grind .
Person2:What did he aim at ?
Person1: He began to be interested in finance because he thought he would be able to inherit the family ' s fortune .
Person2:How could he have such an ill intention ? I think your father can see that through .
formal

Person1: Well , humans could never make something like that .
Person2:Those poor Egyptians slaves worked so hard and you want to give aliens all the credit !
Person1: Be a little more open-minded , Stu ! Don't believe everything you read in your history books !
Person2:OK , but don't believe everything you see on The X-files , either !
Person1: Speaking of The X-files , it's on right now !
informal

Person1: Do you take in students ?
Person2:Yes.If you don ' t mind sharing room , there ' s one available .
Person1: How much is it ?
Person2:$ 30.00 a week .
Person1: Do you think I could have a look at it , please .
Person2:I ' m on my way out now.Could you come back in an hour ?
formal