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

[EX Q]: Sentence1: I am sorry but you will have to get ticket there and here is the address 251a chesterton road. Sentence2: Do you want me to make a booking? Sentence3: I'm seeking an attraction! A boat one will be nice. Sentence4: Yes please! Thank you so much! Sentence5: Great! I have four for you. Two are in the centre. Any location you'd like in particular? Sentence6: Sure, I can get tickets for the cambridge punter in the city centre. If that sounds okay, what day and time would you like? Sentence7: I am also looking for the Oak Bistro, a place to eat. Sentence8: No, I'd like the name of one in the centre please. Question: Who has spoken the sentence 2? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: You're very welcome! Is there anything else that I can help you with today? Sentence2: That is all I will need. Thank you for your help! Sentence3: Please book for 4 people at 17:00 on Sunday Sentence4: Thank you for all your help. Sentence5: I need a restaurant. The restaurant should serve indian food and should be in the expensive price range. Sentence6: I will be departing from my house. Sentence7: Pipasha Restaurant fits all of your criteria. Would you like to book a stay? Sentence8: Yes, I'd like a taxi to take me to Pipasha Restaurant and then to Cambridge Punter. I'd like to arrive at Pipasha Restaurant by 17:00. Sentence9: There are 14 expensive indian restaurants in the city. Do you have a preference of location? Sentence10: I am also interested in attractions in the centre. Specifically, I am interested in multiple sports facilities Sentence11: Your table for 4 has been booked. The table will be reserved for 15 minutes. Your reference number is 8OZ8ZF5G . Do you need anything else? Sentence12: The Cambridge Punter looks like a good choice. Want more information? Sentence13: Actually I'll be at the Cambridge Punter, pick me up there. Sentence14: Yes.East-Side London. Sentence15: How about an attraction that has to do with boats? Sentence16: The phone number to the cambridge punter is 07807718591. Do you require assistance with anything else. Sentence17: I have none available in the centre. Would you like a different area or attraction? Sentence18: You are welcome. Please call us back if we can help you any further. Sentence19: What is the address of your house so I can book the taxi? Sentence20: I just need to know where you will be departing from at first to the restaurant. Sentence21: No problem. Your taxi is booked. The car is a red tesla and the contact number is 07610839736. Anything else I can help you with? Sentence22: Yes, can I get the phone number? Question: Who has spoken the sentence 17? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: I have several options for you. Is there a particular area you're looking for? Sentence2: I'd like international food, please. Sentence3: I have 3 such places available. Allenbell, Autumn House, and Leverton House. Which guesthouse do you prefer? Sentence4: no thanks,thats all for now Sentence5: In the east, please. Something inexpensive, with free parking. Sentence6: Sure, I can help you with that. Was there a specific type of food you were looking for? Sentence7: The missing sock is a cheap international restaurant in the east. Will that work for you? Sentence8: Have a lovely day, goodbye! Sentence9: There are 5 people in my group and we will be staying 2 nights. Sentence10: Booking was successful. The table will be reserved for 15 minutes. Reference number is : YCXB5JQE . Will there be anything else today? Sentence11: If the allenbell is cheap, I would like to book ti for tuesday. Sentence12: How many days will you be staying and will there be other travellers with you? Sentence13: Okay, I have you booked for 5 people, 2 days, beginning on Tuesday. Your reference number is UFT1H00C . Can I help you with anything else? Sentence14: Can you make a reservation for Tuesday for 5 people at 17:15? Sentence15: Yes! Can you help me find a restaurant near the hotel? Sentence16: I need a guesthouse. Question: Who has spoken the sentence 9? (A) User (B) System
[EX A]:
Answer: (B) System