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: Hello , is this People's Theater ?
Person2:Yes , it is . May I help you ?
Person1: Yes , are advance tickets for ' Nut croakers ' still available ?
Person2:What date , sir ?
Person1: October 16th .
Person2:Let me see . Yes , we still have some tickets left . Which performance ?
Person1: 7:30 p . m . performance , please .
Person2:OK , we have tickets at 100 yuan and 50 yuan .
Person1: I'd like to reserve two seats at 100 yuan , please .
Person2:All right . May I have you name , please ?
Person1: Du Kun .
Person2:When would you like to collect the tickets ?
Person1: Tomorrow .
Person2:We can hold them until one day before the show .
Person1: How do we cancel , just in case ?
Person2:Just telephone us , and let us know in advance . We don't charge for cancellation .
Person1: All right , thank you very much . Good bye .
Person2:You are welcome . Goodbye .

Answer: informal

Question: Person1: Hey Bobby . What's going on ?
Person2:Just taking a smoke break .
Person1: I forgot my cigarette today . Do you have another one ?
Person2:Sure . Here you go .
Person1: Thanks .
Person2:I didn't know you smoked .
Person1: Really ? I've been smoking for over a year now .
Person2:Oh . You're new to smoking still . I've been smoking for 7 years .
Person1: You ever tried to quit ?
Person2:Many times . I'm really addicted . It's harder to stop than you think .
Person1: Yeah . I tried to quit last month , and I thought it was going to be easy , but it turns out that I'm still smoking .
Person2:I highly recommend you quit soon . The longer you smoke , the harder it becomes to quit .
Person1: I think you're right . Aright . Gotta go to class . Thanks for the cigarette . I'll talk to you later .
Person2:No problem . I'll talk to you later .

Answer: informal

Question: Person1: Hello ?
Person2:Hi Vicky .
Person1: Are you there yet ?
Person2:Yes .
Person1: I just got off the subway . I'm almost there . Sorry I'm late .
Person2:That's no problem . I just wanted to tell you I'm inside .
Person1: Where are you ?
Person2:On the second floor .
Person1: Should I come to the second floor or do you want to come to the first floor ?
Person2:Come upstairs .
Person1: What ?
Person2:Oh , Can you hear me OK ? I said , come to the second floor .
Person1: Oh , OK . What are you doing there ?
Person2:Just looking at some books on how to learn English .
Person1: Do you want to get something to eat later ?
Person2:No , I'm still full from dinner .
Person1: What do you want to do ?
Person2:I don't know for sure . When you get here we'll talk about it .
Person1: OK , see you soon .
Person2:Bye .

Answer:
formal