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

Sentence1: No thank you. Im finished. Sentence2: Allenbell is my favorite. It has four stars. The phone number is 01223210353. Shall I book that for you? Sentence3: Is there anything else I can help you with? Sentence4: I found 10 places, do you have a hotel style preference of gueshouse or hotel, or an area you prefer? Sentence5: You're welcome. How many people are in your party, and when will you arrive? Also, how long would you like to stay? Sentence6: I'm looking for a cheap place to stay that does not need free parking. Sentence7: It sounds fine. Do any of them include free wifi? Sentence8: There are three cheap guesthouses in the east area, however, they all have parking. Will this be okay, or would you like to look at a different area or price? Sentence9: Okay. Have a good day. Sentence10: That'd be great. Thank you. Sentence11: All of them include free wifi. Sentence12: What's the phone number and star rating of your favorite one? Sentence13: I will book on my own, thanks. Sentence14: I don't have a preference for the type but I would like a place in the east. Question: Who has spoken the sentence 7? (A) User (B) System
Answer: (B) System

Sentence1: There are 33 entries for expensive restaurants in the centre. Would you like to hear some options? Sentence2: As far as thai food goes, I happen to have one place. Good thing is they are very highly recommended. It is called Bangkok City. Would you like a reservation? Sentence3: Hello, I am looking for a restaurant. The restaurant should be in the centre and should serve modern eclectic food. Sentence4: Cambridge Contemporary Art is very nice. It's in the centre part of town, like the restaurant, and it's free to get in. Can I help you with anything else? Sentence5: No, that is all. Goodbye. Sentence6: Fantastic, can you also find me a museum attraction? Sentence7: Any type would be fine I just need to know the area and entrance fee of one you would recommend. Sentence8: Can you try booking at 15:45? Sentence9: Booking was successful. The table will be reserved for 15 minutes. Reference number is : 1NY7QJKY . Sentence10: Are any of them modern eclectic food? Sentence11: Yes, I'd like to book for 2 people at 16:45 on tuesday. Sentence12: Okay. Have a lovely day then. Sentence13: Dang...How about some Thai food instead Sentence14: There are several wonderful museums in town. Is there a specific area you prefer? Sentence15: Are there any other expensive restaurants in that area that may be nice to visit? Sentence16: There are no restaurants in that are would you like to try a different area? Sentence17: No, there doesn't seem to be any modern eclectic places at all. Would you like a different type of cuisine? Sentence18: I'm sorry, but they seem to be all booked up at that time. Would you like to try a different day or time? Question: Who has spoken the sentence 9? (A) User (B) System
Answer: (B) System

Sentence1: Can you book that train for five people? Sentence2: Can you help me find a place to stay that is moderately priced and includes free wifi? Sentence3: Ok, you have the rooms. Reference number is : HX250ZFS . Can I help you with anything else? Sentence4: Where are you leaving from? Sentence5: Great I also need a train going to cambridge on tuesday as well. Sentence6: Yes, I would prefer it to be in the north. Sentence7: Can you book a room at the Ashley for me? 5 people, 5 nights, and we'll arrive on Tuesday. Sentence8: A hotel please. I also need free parking. Sentence9: Okay the TR7598 leaves at 16:32 and arrives at 17:32. Sentence10: I'm leaving from Broxbourne. Sentence11: That narrowed it down a little bit. Would you prefer a guesthouse or a hotel? Sentence12: i just want to get there by 19:00 Sentence13: Did you have a departure or arrival time in mind? Sentence14: I sure can. That total charge is 89.5 GBP and the reference number is OTQM5TP5 . Sentence15: I have 2 hotels that have what you are asking for. Both are 2 stars and offer free parking and wifi. Ashley Hotel and the other is the Lovell Lodge. Sentence16: Great, thanks for all of your help today. I won't be needing any further help. Bye. Sentence17: No thank you that will be all Sentence18: i have many options for you. are you looking in a particular area? Question: Who has spoken the sentence 16? (A) User (B) System

Answer: (A) User