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

[Q]: Sentence1: There are lots of local attractions, are you interested in architecture? Sentence2: No thank you. That will be everything I need today. You have a nice day. Sentence3: You're welcome! Have a nice day. Goodbye. Sentence4: I have confirmed a taxi picking you up at backstreet bistro at 24:45. The contact number is 07972785913. A blue volkswagen will pick you up. Can I help with anything else? Sentence5: Yes sure as long as the attraction is in the city center. Could you also provide me with the phone number and postcode of the attraction? Sentence6: Sure. I also need somewhere to eat. I'm thinking something on the expensive side and close to the college. Sentence7: Backstreet bistro is located in town centre. The address is 2 Sturton Street City Centre, phone 01223306306. Do you need any further assistance? Sentence8: Can I get one in the centre of town and looking for gastropub food. Sentence9: Of course. How about Saint Catharine's College, in postcode cb21rl? Phone is 01223338300. Sentence10: Backstreet Bistro is an expensive restaurant in the centre of town that serves gastropub food. Would you like more information or to make a reservation? Sentence11: Alright, there are 33 different restaurants around the college that are expensive. Is there a type of food you are looking for? Sentence12: Hi, I'm planning a trip to Cambridge and would like a few ideas on places to go for fun. Sentence13: Information, please! I'm not looking to make a booking at the moment. Sentence14: Yes, can you book a taxi between the two? I would like to leave the restaurant by 24:45. Question: Who has spoken the sentence 9? (A) User (B) System
[A]: Answer: (B) System


[Q]: Sentence1: That is all I need for today. thank you. Goodbye. Sentence2: I have 7 available. The first leaves at 17:32, and arrives at 18:32. Would you like me to book that for you? Sentence3: I'll be departing from Broxbourne and I'd like to go to Cambridge. Sentence4: I'm not looking to book at the moment, can I just get the train ID? Thanks! Sentence5: Okay glad I could help. Enjoy your trip. Sentence6: I'd like to find a train that leaves after 17:00 on Saturday. Sentence7: Of course! TR0811 leaves at 17:32, arrives at 18:32, with a duration of 60 minutes. The price is 14.32 pounds. May I assist you with anything else? Sentence8: Absolutely, I need departure and destination information and a time you need to arrive by. Question: Who has spoken the sentence 7? (A) User (B) System
[A]: Answer: (B) System


[Q]: Sentence1: No, thank you. Please go ahead and make a reservation at Meze Bar. Sentence2: I'm looking for an expensive restaurant in the centre of town. Sentence3: Please do, thank you. Sentence4: meze bar restaurant is great. it is located in196 Mill Road City Centre, cb13nf. can i give you their phone numbers? Sentence5: I located the Meze Bar restaurant for you but have not made a reservation per your request. Would you like me to locate a different restaurant? Sentence6: Gonville Hotel is in the Centre, has 3 stars in the expensive price range. Would you like a reservation? Sentence7: I also would like a restaurant. Sentence8: I'd like to try some Turkish cuisine if there's a restaurant that serves it. Sentence9: They do have free parking yes. Sentence10: I can help you with that. Are there any other requirements you are looking for? Sentence11: And what's their phone number? Sentence12: Do they offer free parking? Sentence13: Have a nice day. Sentence14: I would like to leave the restaurant by 11:15. Sentence15: Ok sure, When and with how many people will you be dining at Meze Bar? Sentence16: That's all the information I need on the hotel. I would like to book a taxi to commute between the restaurant and the Gonville Hotel. Sentence17: No. thank you. I am also looking for a place to stay. I would like a 3 star hotel in the expensive price range. Sentence18: Booked car type : black bmw Contact number : 07798470642 Sentence19: What time would you like to travel? Sentence20: I'll do that later once I find out how many people can make it. Thank you for all your help. Sentence21: It is 01223366611 Sentence22: I'm sorry, they do not have a phone number listed. Would you like to book a table? Question: Who has spoken the sentence 18? (A) User (B) System
[A]:
Answer: (A) User