You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Example input: Sentence1:i need a place to dine in the center thats expensive Sentence2: I have several options for you; do you prefer African, Asian, or British food? Sentence3: Any sort of food would be fine, as long as it is a bit expensive. Could I get the phone number for your recommendation?Question: Who has spoken the sentence 2? (A) User (B) System
Example output: Answer: (A) User
Example explanation: The sentence 1 is said by a user because the intent of it says that the information has to be gathered from the system
Q: Sentence1: I will be traveling to Cambridge and I'm excited about seeing local tourist attractions. Sentence2: I'd like a taxi please. It should pick me up at 15:30 from The Byard Art and drop me off at the hotel. Sentence3: Thats it, thanks so much! Sentence4: Your booking was successful. Your reference number is S56D4VON . Can I assist you further today? Sentence5: The area is flexible. But I am looking for something with a 3-star rating that offers free wifi. Sentence6: Sure. I need rooms for 7 people for three nights starting Thursday. Sentence7: Great! There are many wonderful tourist attractions in Cambridge. Is there a particular type of attraction you are looking for? Sentence8: Not in particular. Please recommend one and provide the area and entrance free. Sentence9: Glad to be of service. Sentence10: I would like to visit a museum. What do you suggest? Sentence11: There are 23 museums. Is there a part of town you are interested in? Sentence12: I have 5 hotels that meet those specifications. Do you have a area in town in mind? Sentence13: Thanks! I would also like to find an expensive hotel. Sentence14: The Byard Art museum is free and is in the South. Sentence15: Gonville Hotel is a 3-star hotel that offers free wifi. It is located in the centre area. Would you like me to book that for you? Sentence16: A blue Lexus will come to pick you up. Their number is 07670314554. What else do you need? Question: Who has spoken the sentence 5? (A) User (B) System
A:
Answer: (B) System