Q: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Sentence1: Thank you for using our system today! Sentence2: Cambridge Arts sounds good, can I get the phone number? Is there any entrance fee? And then a nice expensive dinner in the same area please. Sentence3: What are your ideas? what area of town and what type of attraction? Sentence4: we have wagamama located in 36 Saint Andrews Street. can i book for you? Sentence5: Booking completed! Booked car type : grey volkswagen Contact number : 07275251696 Can I help with anything else today? Sentence6: I'm looking for a theatre in the centre. Sentence7: There are four theatres in Centre: ADC Theatre, Cambridge Arts Theatre, Mumford Theatre and The Cambridge Corn Exchange. Would you be interested in any of these? Sentence8: I am looking for something entertaining in town later and I've got some things in mind. Sentence9: Hmm, I'll try Japanese instead. Sentence10: Cambridge arts theatre phone is 0122350333, no entrance fee information is available. There are 33 restaurants in your price range, do you have a food type preference? Sentence11: No thank you I just need the postcode. Sentence12: I am sorry but there are no Cuban restaurants available. Would like another type of food? Sentence13: Yes, I like there to be Cuban food. Sentence14: That will be all today. Thank you. Sentence15: Can you book me a taxi that will pick me up from Cambridge Arts Theatre at 07:15 and take me to Wagamama? Sentence16: The post code is cb23ar. Is there anything else I can help with? Question: Who has spoken the sentence 13? (A) User (B) System
A:
Answer: (B) System