Q: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Sentence1: I would like to find a lovely hotel to stay in cambridge that has free wifi, so I can watch netflix. Can you help me with that as well? Sentence2: The booking at huntingdon marriott hotel was successful. Your reference number is 5ZCWD20P . Sentence3: I'm showing 3 different ones. One is located in the centre & the other 2 are west. Would you like me to book one of these for you? Sentence4: The TR8662 train arrives in Cambridge at 12:35. Do you want me to book a hotel now? Sentence5: I'm looking for a train departing from Norwich to Cambridge on Friday, I'm hoping to leave by 12:00. Sentence6: Welcome. have a nice day. Sentence7: TR8662 runs norwich to cambridge and leaves at 11:16 that day. Should I book it for you? Sentence8: I'd like a 4 star hotel but it doesn't matter which area it's in. Sentence9: Oh I'm sorry, I forgot I need to know what time my train will arrive in Cambridge. Can you please help me with that first? Sentence10: We have lots of accommodations that include free wifi. What type of place would you like to stay in, and what area of the city do you prefer? Sentence11: The price of the TR8662 is 17.60 pounds per ticket. Is there anything more I can help you with today? Sentence12: could I have the price please? Sentence13: Of course what day would you like travel? Sentence14: Hello, I'm looking for a train departing from Norwich on friday. Sentence15: Yes, I'll need a hotel for 7 people for 4 nights starting Friday. Sentence16: Thank you. That will be all. Question: Who has spoken the sentence 13? (A) User (B) System
A:
Answer: (B) System