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'.

Q: Person1: Harry , do you like the opera ?
Person2:No , not really .
Person1: Why is that ? It is called real art .
Person2:Well , it's very expensive and they're usually singing in another language . That kind of gets on my nerves .
Person1: Yeah , that makes sense .

A: informal
****
Q: 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 .

A: formal
****
Q: Person1: I think I need a new notebook ...
Person2:Why ? Is there some new , cool computer out on the market ?
Person1: You bet there is . Feast your eyes on this puppy !
Person2:That's a notebook ?
Person1: Believe it !
Person2:It looks more like a toy , or a cool briefcase !

A:
informal
****