Detailed Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: Which one has thai food? Sentence2: I can certainly help you find a train leaving from Kings Lynn. What day would you like to go? Sentence3: Departure time isn't important as long as I can get to Cambridge by 09:15. Sentence4: Thanks, I also need an expensive thai restaurant. Sentence5: No problem. The number is 01223323178 and they are located at 35 Newnham Road Newnham. Is there anything else you need help with today? Sentence6: No, not today. Can you just give me the train ID and travel time? I guess I will need that departure time too. Thanks. Sentence7: Both choices serve Thai. I prefer sala thong. Sentence8: Hello, I'd like some information on a train departing from kings lynn. Sentence9: Sure. The post code is cb39ey. Is there anything else I can find for you today? Sentence10: I have 2 options for you. Sala Thong is located in the west. And Bangkok City is located in the centre. Which would you prefer? Sentence11: I hope when you come the weather will be clement. Sentence12: 09:15 please, thank you for your help. Sentence13: I have a deaprting at 5:11. Shall I book you one? Sentence14: I want to leave on Sunday. Sentence15: What time do you need to be in Cambridge? I have 19 trains available. Can you help me sort this out better for you? Sentence16: Could you give me the phone number and address of sala thong? Sentence17: No that will be all, thanks. Sentence18: Do yo have a preferred time to leave? Sentence19: Can I also get the postcode please? Sentence20: Train TR6003 departs Kings Lynn at 05:11. The travel time is 47 minutes. It will get you to Cambridge at 05:58. Question: Who has spoken the sentence 5? (A) User (B) System
A:
Answer: (B) System