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

[EX Q]: Sentence1: That is all, thank you, goodbye. Sentence2: Is there anything else we can help you with? Sentence3: Goodbye. Sentence4: Ok. Thanks. Sentence5: I am looking for a restaurant in the south part of town and serving portuguese food. What is the address and phone number? Sentence6: Nandos is a portuguese restaurant in the south part of town. Their address is Cambridge Leisure Park Clifton Way and their phone number is 01223 327908 Question: Who has spoken the sentence 2? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: Yes sir! Soul tree nightclub is a good one. they are at 8 market passage, postal is cb23hx and phone number is 01223519224, is there anything else that I can assist with? Sentence2: Pick a good one for me. I need the phone number and postcode for it too. Sentence3: Sala Thong is an expensive Thai place in the west. They're located at 35 Newnham Road, cb39ey. Sentence4: Can't wait to come party at one of your nightclubs in town. Sentence5: There are 5 nightclubs in the centre and one in the south. Would you like more information on one of them? Sentence6: Thanks, that is all for today. Goodbye. Sentence7: You're welcome, have a good day. Sentence8: Can you give me information on a restaurant called Sala Thong? Question: Who has spoken the sentence 3? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: I want a hotel close to Backstreet Bistro. Not too expensive. Sentence2: Unfortunately, I am unable to book at this time. Would you like the number? Sentence3: I want to find a nice, expensive place to dine in the centre. Sentence4: I want a place that serves astropub Sentence5: Yes book room for 2 starting Wednesday for 5 nights and get me reference number. Sentence6: Are there any expensive hotels in that area? Sentence7: Great, thank you. I'm good to go now. Bye! Sentence8: The booking system is back up, so I went ahead and completed the reservation for you at Cityroomz as requested. Your reference number is ORTE2F27 . Anything else? Sentence9: Yes, for 2 people at 11:45 on wednesday Sentence10: What area of town are you looking to stay and what price range are you looking for? Sentence11: Cityroomz is the only moderately priced hotel in the centre of town with free WiFi. Can i book a room for you? Sentence12: Backstreet Bistro is my favorite. They're located at 2 Sturton Street City Centre, cb12qa. Would you like to book a table there? Sentence13: Booking was successful. The table will be reserved for 15 minutes. Reference number is : WV7CR016 . Sentence14: i have 33 to choose from. what is your prefered type of food? Sentence15: The booking system is not working at this time. Sentence16: I'm glad we could help. Have a great day. Sentence17: Could you retry, only starting on Wednesday? Sentence18: Thanks. I'm also looking for a hotel with free wifi. Question: Who has spoken the sentence 17? (A) User (B) System
[EX A]:
Answer: (B) System