You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: That's it for me today. Thank you, bye Sentence2: I would like more info on the Travellers Rest, it is a restaurant. Sentence3: My apologies, there is a known system issue that is not allowing booking specifically on restaurants, you would have to call them directly at 01223276182, can I help with anything else? Sentence4: A yellow toyota will pick you up at Cityroomz and get you to the restaurant for that reservation. The contact number is 07700237290. Can I help with anything else? Sentence5: I would like to stay in the centre of town. Sentence6: I also need to find a taxi. Sentence7: I need a nice place to stay, do you have those? Sentence8: I would like the moderate price range. Sentence9: Sure, I have five options for you. What price range? Sentence10: Sure. I would like to book it for 6 people on Monday at 14:30. Sentence11: We have many nice places that would suit your needs. Is there a particular area you are wanting to stay in? Sentence12: Thank you have a good day too? Sentence13: Booking was successful. Reference number is : XPE70MGX . Is there anything more I can help with today? Sentence14: Where would the taxi need to pick you up? Sentence15: I have found the cityroomz located in the centre for a moderate price. It has 0 stars and free internet. Can I make the reservation for you? Sentence16: Can they pick me up at the hotel and take me to the restaurant in time for my reservations? Sentence17: It is a british restaurant in the west. It is expensive. Can I tell you anything further about it? Sentence18: Yes please make a booking for 6 people and 2 nights starting from monday. Question: Who has spoken the sentence 11? (A) User (B) System
A:
Answer: (B) System