Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: Ok, hope you have a wonderful time. Thank you, goodbye. Sentence2: Booking was successful. Reference number is : WYO54VCI . anything else? Sentence3: I would also like to book at a guest house named Aylesbray Lodge, starting Monday. Sentence4: Happy to assist. Sentence5: I'm starting to book your reservation at Aylesbray Lodge starting on Monday, how many days will you be staying? Sentence6: I will be staying for 3 nights. Sentence7: No that will be all. Thank you! Sentence8: That sounds good, I like that. Could you tell me what the postcode is please? Sentence9: Hi, can you help me with some trip planning? I could use some suggestions for places to go in town. Sentence10: I'm looking for a theatre in any part of the city. Can you recommend one? Sentence11: the postcode is cb11pt Sentence12: There is the Mumford theatre, it is located at Anglia Ruskin Enterprise, East Road in the Centre area. Sentence13: I'm grateful for your services. Sentence14: OK, and how many people will be staying in the room? Sentence15: I can definitely help you with that. Is there a specific type of attraction you are interested in or section of the city you were looking at? Sentence16: 2 people, is that fails then try 1 night. Please provide the reference number. Question: Who has spoken the sentence 5? (A) User (B) System
Output:
Answer: (B) System