Q: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Sentence1: I just need to ensure the taxi gets me from the museum to the restaurant by my reservation time. Can you swing that? Sentence2: What type of place would you like to go to? Sentence3: I have about 11 different museums in the centre of town. Do you have any certain type of museum in mind. I have art museums, one with antiques, etc. Sentence4: I want to go to a museum. Sentence5: Whichever one you think, and please provide etrance fee as well. Sentence6: I got you a red tesla taxi. The contact number is 07456538406. Sentence7: Yes, could we try for 13:45. That would work for me. Sentence8: Where would you like to leave from and what time? Sentence9: Oh dear. I was unable to make that reservation. Could we try another time? Sentence10: Okay, that's all I needed. Thank you. Sentence11: There are 9 Italian restaurants in town, did you have a price range in mind? Sentence12: Sure, book it for 3 people at 14:45 on Monday. Sentence13: I am planning my trip to Cambridge and looking for a restaurant in the centre that serves italian food. Can you help me? Sentence14: Enjoy your trip and please call back if you need anything else. Sentence15: Yes, I'd like to find a place to go in the same area as the restaurant. Sentence16: I would like a moderately-priced restaurant. Sentence17: They are all free. There is williams art and antiques, I like that one. Sentence18: I found Pizza Express on Regent Street, would you like me to book it for you? Sentence19: I've booked it for 13:45 and your reference number is XEO5JPU2 . Can I help you any further? Sentence20: Great can I also get a taxi to take me between the two places? Question: Who has spoken the sentence 10? (A) User (B) System
A:
Answer: (A) User