You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: I would like to stay at the El Shaddai. I would like to book it for 1 person for 4 nights starting on Wednesday. Sentence2: I'm looking for a train that will be leaving on Sunday going to Peterborough. Sentence3: There are 38 trains, what time would you like to depart or arrive? Sentence4: Indeed it is! I just booked you for two nights, ref num: IC0RATQI . Do you need anything else today? Sentence5: Your trainID TR9733 has been booked to leave at 12:34. Than you. Sentence6: That's all. Thank you very much. Sentence7: We are happy to help. Thank you for using our service. Have a wonderful day! Sentence8: I also need a room in Peterborough. Sentence9: Unfortunately I was not able to book the hotel for then. Would you like to book another day or consider shortening your stay? Sentence10: There are 32 trains travelling to peterborough on Sunday departing from cambridge. The closest arrival time is 21:24, would you like to book a seat? Sentence11: There are many results for hotels and guesthouses, could you be more specific on what price range you are looking for and what part of town? Sentence12: Yes, for 1 person please, and give me the reference number. Sentence13: Is it possible to book this reservation for 2 nights? Sentence14: I need to get there by 21:30. Question: Who has spoken the sentence 11? (A) User (B) System
A:
Answer: (B) System