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

[Q]: Sentence1: Let's go with the cheap one. I'll need a table for 7 on Sunday at 12:15 please. Sentence2: Can you try on saturday, 7 people, at 12:15 Sentence3: you're in luck I have two options for you. One is in the cheaper price range, the other is listed as moderately priced. Do you have a preference? Sentence4: Unfortunately the booking was not successful. Sentence5: Yes, you're booked for Saturday with reference number V54FG5X2 . The table will be reserved for 15 minutes. May I help with anything else? Sentence6: Thank you, goodbye! Sentence7: No, that's all I need. Thanks for your help! Sentence8: Yes I would like to find Spanish food in the center of town. Question: Who has spoken the sentence 7? (A) User (B) System
[A]: Answer: (B) System


[Q]: Sentence1: No I don't. Pick any of the 33 and give me the address and area, please. Sentence2: I have 33 entries that match your request. Do you have a star rating preference? Sentence3: Yes, what time does that train leave? Sentence4: The alexander bed and breakfast is a cheap 4-star guesthouse in the center, how does that sound? Sentence5: I don't need any specific area, just need a guesthouse that is cheap and includes free parking. Sentence6: Perfect. Thank you. That's all the information I need for Cambridge. You have been a great help! Sentence7: I need to find a Train leaving on Friday from London Liverpool Street and arriving in Cambridge. Sentence8: The TR5015 will get you there by 15:07. Would you like me to book you some seats? Sentence9: I have 10 trains as options. Do you have a time you want to leave or arrive by? Sentence10: Can you tell me what area it's in? And can you give me an address? Sentence11: Please book it for me.I also need a place to stay,a guesthouse with free parking ? Sentence12: The travel time is 88 minutes. Can I help you with anything else? Sentence13: Yes I'd like to arrive in Cambridge by 15:15. Sentence14: We hope you enjoy your stay. Goodbye. Sentence15: No thank you, may I please get the travel time of TR5015? Sentence16: Sure. What area would you like to stay in? Sentence17: Alexander bed and breakfast in found in the center of the town. Their address is 56 saint barnabas road. Sentence18: Thank you, I'm also looking for a place to stay. Can you help me find someplace? Sentence19: It would depart at 13:39 and arrive in Cambridge at 15:07. Sentence20: I have booked the train for you. The reference number is JN7FFTTY . Question: Who has spoken the sentence 5? (A) User (B) System
[A]: Answer: (B) System


[Q]: Sentence1: There is a cheap Italian restaurant at 20 Milton Road Chesterton, or one that serves Indian food at Victoria Avenue Chesterton. Sentence2: Thank you goodbye. Sentence3: I am looking for a cheap restaurant in the North part of town. I will need their address. Sentence4: Thank you, goodbye! Question: Who has spoken the sentence 2? (A) User (B) System
[A]:
Answer: (A) User