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: Congratulations on the new house !
Person2:Thanks ! We love it .
Person1: Well , you guys worked hard for it . It's really beautiful .
Person2:I'm just not looking forward to cleaning it !
[A]: informal

[Q]: 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 .
[A]: formal

[Q]: Person1: You have a lovely house , Jack .
Person2:Thank you . But a number of things have been going wrong lately .
Person1: That's too bad . What problems are you having .
Person2:Oh , the whole house needs re-painting for starters . The carpet in the living room is worn out , and I'd like to put in new wall-to-wall carpeting . Last week , I had to call the plumber to fix the toilet . Anyway , all par for the course when you own a house , I guess . I think I am going to hire an interior decorator to look the place over .
Person1: I ' Ve studied home decoration as a hobby . Could I make some suggestions ?
Person2:Go right ahead .
Person1: Well , I think a crystal chandelier would look great in your living room , and maybe some new drapes for the windows . Also , a grandfather clock would look great in the den . Perhaps you could buy some potted plants for the dining room
Person2:Well , you really do have a talent for this , Alice . Thanks for the suggestions .
Person1: You are welcome , Jack . Glad to be of help .
[A]:
informal