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

[EX Q]: Sentence1: It looks like there are hourly trains starting at 5:09. Did you have a particular day and time in mind? Sentence2: Thanks for the help. Sentence3: Will you train arriving at 07:54 work ok for you? Sentence4: Yes I need it booked for 2 people please. Sentence5: Unfortunately, there are no other Italian restaurants in the east. Would you like me to find you one in another area? Sentence6: Is the pizza hut in the moderate price range? Sentence7: I've successfully booked 2 tickets for you, the reference number is 9FE8N16G . Sentence8: I am looking for an Italian restaurant in the east. Sentence9: Pizza hut fen ditton matches your description. Sentence10: I guess it'll have to do. Can you book us a table for 2 on Wednesday at 14:00 please? Sentence11: Uh, no pizza hut's please. Something more classy please. Sentence12: Absolutely! To start, let me get more details. What are your desired departure and arrival cities? Sentence13: Thanks so much! Can you help me with train tickets too? Sentence14: Yes, it is. Should I book it for you? Sentence15: Yes, I'd like to book the train for Wednesday and I want to arrive in Cambridge by 08:30. Sentence16: Booking was successful. The table will be reserved for 15 minutes.Reference number is : H4BTTI6P . Sentence17: The train should go to cambridge and should depart from leicester. Sentence18: Have a great day! Question: Who has spoken the sentence 7? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: the post code is cb41er. what day would you like the reservation for? Sentence2: You're quite welcome. Thanks for contacting the Cambridge TownInfo Centre and have a great day! Sentence3: The Ashley Hotel sounds fine, can you book that for me please. Also, I need the postcode of that hotel as well. Sentence4: I'm looking for a hotel in the north side. Sentence5: Ashley Hotel and Lovell lodge are both available Sentence6: Actually, I don't need a booking. Thanks. Have a nice day. Sentence7: I have many options in the north. All are in the cheap to moderate range. Do you have any further requirements? Sentence8: I'd like a 2 star hotel with free parking. Question: Who has spoken the sentence 5? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: No, that should be all I need. Thank you! Goodbye. Sentence2: Absolutely. Their postcode is cb21en. Would you like to make a reservation? Sentence3: Morning! I need a train departing from kings lynn. Sentence4: The hotel does have free parking! It's called the lensfield hotel and has 3 stars. Sentence5: Yes, the ticket costs 9.80 pounds and the ride is 47 minutes long. Can I be of any other help to you today? Sentence6: Note yet. Can you tell me more about the hotel? Sentence7: I hope you enjoy your stay. Have a good day. Sentence8: There are trains from Kings Lynn every hour from 5:11. Did you have a particular day and time of day in mind? Sentence9: The Lensfield Hotel is in the south. It's a 3 star, expensive hotel, with free wifi and parking. Would you like me to make a reservation? Sentence10: Sounds good. Could you tell me how much it costs for a ticket, and how long of a trip that will be? Sentence11: How about the TR8331 Train? It departs at 11:11 and arrives in Cambridge at 11:58. Sentence12: There is 1 expensive hotel and 3 guesthouses ranging from cheap to moderate. Which do you prefer? Sentence13: The lensfield hotel is in the expensive price range. Would you like to make a reservation? Sentence14: Yes, my train should leave on tuesday and should leave after 11:00. Sentence15: Yes. I am also looking for a place to stay in the south with free wifi. What options are there for that? Sentence16: Could you tell me the postcode of this hotel? Sentence17: Not quite yet, but can you tell me the price range of the Lensfield, please? Sentence18: Does the hotel have free parking? Question: Who has spoken the sentence 11? (A) User (B) System
[EX A]:
Answer: (B) System