Detailed Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: Sure, what day would you like to book it for? Sentence2: Are there any british restaurants on the west side? Sentence3: Saint Johns Chophouse 21-24 Northampton Street, post code cb30ad. Will there be anything else today? Sentence4: Yes I do, I'd like to leave the restaurant by 04:45. Sentence5: Yes, please, and go to the B&B you booked for me. Sentence6: Okay, a black toyota is booked. You can contact them at 07431558834 Sentence7: Can you book that for 6 ? Sentence8: There are 4 accommodations that fit your criteria. How about Finches Bed and Breakfast? Sentence9: Thank you for contacting us, please don't hesitate to reach out if there's anything else you need in the future. Sentence10: Is that in the moderate price range? Sentence11: I am also looking for a hotel in the same area that offers free wifi. Sentence12: Yes, Saint Johns Chop House is in the moderate price range. Sentence13: For the Westies, saint johns chop house is the place. Need a reservation? Sentence14: Thank you, that was everything that I needed. Sentence15: Booking was successful. Reference number is : G17HAX2C . Will you need a taxi to get between them? Sentence16: Great! I'm not sure when I want to go, so can I just get the address and postcode? Sentence17: Did you want it to pick you up from Saint Johns chop house? Sentence18: I'd like to book 2 nights starting on tuesday Question: Who has spoken the sentence 11? (A) User (B) System
A:
Answer: (B) System