instruction:
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'.
question:
Person1: Are you almost finished with my hair ?
Person2:I'm almost finished .
Person1: How much longer is it going to be ?
Person2:I'm done now . Do you like it ?
Person1: I absolutely love it .
Person2:You really like it ?
Person1: Yes , I truly do .
Person2:I'm glad you like it .
Person1: How much do I owe you ?
Person2:It's going to be $ 55 .
Person1: Here you go , thanks for everything .
Person2:Make sure and come back in a couple of weeks .
answer:
informal

question:
Person1: Thanks for offering to give me a lift . I ' m looking forward to this party , but I didn ' t want to go alone .
Person2:Don ' t mention it . It ' s my pleasure . Have you been to one of these large , sit-down dinner parties since you got to New Haven ?
Person1: No , this is my first.Last week I went to a cookout for new professors at Dean Barksdale ' s home . I took a taxi because I didn ' t want to be late.But I was the first one
Person2:Cookouts often start slowly . A two o ' clock start means you arrive any time after two .
Person1: Thanks for telling me this .
Person2:I was late getting back from the mall , but I ' m hurrying .
Person1: Why are you in such a hurry ? They said , Dinner at eight , and it ' s only seven-fifteen . I don ' t want to be the first one there again .
Person2:Don ' t worry . We won ' t be the first .
answer:
informal

question:
Person1: It's very nice of you to invite me .
Person2:I'm very glad you could come , Mr . Liu . Will you take a seat at the head of the table ? It's an informal dinner , please don't stand on ceremony ... Mr . Liu , would you like to have some chicken ?
Person1: Thank you . This is my first time to come to a Chinese restaurant . Could you tell me the different features of Chinese food ?
Person2:Generally speaking , Cantonese food is a bit light ; Shanghai food is rather oily ; and Hunan dishes are very spicy , having a strong and hot taste .
Person1: Chinese dishes are exquisitely prepared , delicious , and very palatable . They are very good in colour , flavour , and taste .
Person2:Mr . Liu , would you care for another helping ?
Person1: No more , thank you . I'm quite full .
Person2:Did you enjoy the meal ?
Person1: It's the most delicious dinner I've had for a long time . It's such a rich dinner .
Person2:I'm so glad you like it .
Person1: Thank you very much for your hospitality .
answer:
informal