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 Michelle . Good to see you . Are you at lunch ?
Person2:Oh hi Jim . No I just got back . I thought you were on vacation now .
Person1: No , I wish I was ! I just got back from Spain actually .
Person2:Oh wonderful ! Have you been there before or was it your first time ?
Person1: My first time . I've traveled around Europe a lot , but this was my first time to Spain . It was amazing , and the weather was just beautiful ! No rain , and just sun , sun , sun ...
Person2:I'm so jealous of you . I've never been anywhere in Europe . I've always dreamed of traveling around and seeing the sights .
Person1: Well , I really recommend Spain . You really should go . Anyway , it's been great to catch up , but I must be going , this is my floor . Speak again soon I hope .

Answer: informal

Question: Person1: I was just thinking to call you , then the phone rang and it was you calling me .
Person2:Great minds think alike .

Answer:
informal