You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

[EX Q]: Sentence1: No, that's great, thanks. Sentence2: Your grey Honda is booked, and the contact number for the driver is 07817450562. Can I do anything else for you today? Sentence3: I need to actually arrive by 19:15. Sentence4: I will be departing from parkside police station. Sentence5: What time would you like to depart at? Sentence6: I'd like a taxi to the ugly duckling Sentence7: Where will you be departing from today? Sentence8: Have a nice day. Thank you for contacting us. Question: Who has spoken the sentence 1? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: I'm sorry can I help you with anything else? Sentence2: Booking completed! Booked car type blue honda Contact number 07444279931 Sentence3: Can you help me book a taxi? Sentence4: What is your destination? Sentence5: I need to leave the attraction by 15:15 and arrive at the hotel. Sentence6: No thank you. That is all. Sentence7: No preference. You pick. Sentence8: Definitely - Cambridge has many guesthouses. Is there a particular area or price range you had in mind? Sentence9: Thank you. I'm also looking for a place to go in the centre. I'll need the postcode for the attraction. Sentence10: Hi, can you help me find a guesthouse to stay at? Sentence11: You're welcome, glad I could help. Sentence12: Yes please for 2 nights starting from Sunday for 4 people. I will need a reference number. Sentence13: There are many places in the centre of town. Do you have any further preferences or would you like me to recommend one? Sentence14: I do not have a price range in mind. Sentence15: old schools is my favourite. can i give you the details? Sentence16: Your reservation for 4 at alexander bed and breakfast this Sunday for 3 days 2 nights was successful. Your Reference number is : 1FDBJB3A . Sentence17: Thank you very much. Sentence18: Thanks you have a nice day as well. Sentence19: Have a nice day. Sentence20: Sure, I will work on booking that for you. Sentence21: Alexander bed and breakfast comes highly recommended. It is located in the centre area and has a cheap price range, shall I book there for you? Sentence22: That is all I needed thank you for your time. Sentence23: Ok, I have booked you a yellow volvo, contact number 07291792842, is there anything else you need? Sentence24: I do not have a preference. Sentence25: Do you have a price range? Sentence26: Yes I need their postcode. Sentence27: Old Schools postcode is cb21tt. Will there be anything else? Sentence28: Did you get the reference number yet??? Question: Who has spoken the sentence 26? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: Yes I would like to book that for 3 nights from Saturday for 7 people. Sentence2: Can you find me a spanish restaurant in the moderate price range? Sentence3: You are all set, the reference number is Y5RM8ZUC, can i assist with anything else? Sentence4: No thank you, I just need the post code. phone number and address please. Sentence5: Acorn Guest House is located in the north area of town. Would you like more information? Sentence6: Their phone number is 01223353888. Their postcode is cb41da and their address is 154 chesterton road. Sentence7: Yes, La Tasca matches your preferences. Would you like their information? Sentence8: Ok great, have a wonderful day! Sentence9: Will you need any dinner reservations to go with that? Sentence10: I want to double check, is La Tasca in the centre of town? Sentence11: Thanks that's all I needed to know today. Sentence12: Yes, it is in the centre. Would you like a reservation? Sentence13: I'm looking for a hotel called acorn guest house Sentence14: No thanks. I just need to book the room. Question: Who has spoken the sentence 9? (A) User (B) System
[EX A]:
Answer: (B) System