Given the task definition and input, reply with output. You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: Unfortunately, there is no such place in town. Could you like to consider other areas of town? Sentence2: The Dojo Noodle Bar is available, should I book it for you? Sentence3: I am still unable to make that booking for you. Would you like to make a reservation at another restaurant for Monday? Sentence4: There are 15 cheap restaurants in the centre. What type of food do you want to eat? Sentence5: Can you have a taxi pick me up at vue cinema and bring me to the restaurant, arriving by 18:00? Sentence6: Hi I am looking for an entertainment venue in the centre of town. Sentence7: Booking was successful. The table will be reserved for 15 minutes. Reference number is : XL39ZCSJ . Is there anything else I can help you with? Sentence8: I want to confirm your restaurant reservation is for Dojo Noodle Bar. Sorry for the previous delay. I am glad I was able to help you. Goodbye. Sentence9: Oh, that's too bad. How about Monday? Sentence10: Yes, is there a restaurant also in that same area? Sentence11: what price range do you want your restaurant. Sentence12: Yes please that would be okay I guess. Sentence13: how about one that is in the type of cinema? Sentence14: A black toyota has been booked, and you can call 07409806592 to reach the driver if you need. Anything else today? Sentence15: How many people will be dining? Sentence16: Try once more in case they fixed the system glitch, if not Ill try any other place that you recommend. Sentence17: I don't care. What do you recommend out of those options? Sentence18: I'd like to save some money for other things, so let's find one that's on the cheap, please. Sentence19: I am unable to make that booking for you. Would you like to make a reservation at another restaurant for Monday? Sentence20: Yes. It'll be just me dining. I want to reserve thursday at 18:00 there. Give me the reference number too please Sentence21: 1 person at 18:00 on Monday, please. Sentence22: Vue cinema is available, they are at the grafton centre, east road, postal cb11ps, they can be reached at 08712240240, can I assist with anything else? Sentence23: I am unable to book at this time. Sentence24: That's everything! thanks a bunch! bye! Question: Who has spoken the sentence 11? (A) User (B) System
Answer: (B) System