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

Sentence1: Booking was successful for the bridge guest house. Your Reference number is : LBEOV690 . Sentence2: Yes please. Which is the cheapest? Sentence3: Thank you. Have a nice day. Sentence4: No. I would like to make a reservation for Wednesday for 3 nights and 8 people. I will also require a reference number. Sentence5: I was unable to book your stay at any of the three hotels. Would you like to change the length of your stay or change the day? Sentence6: There are 2 hotels with a 3 star rating and free parking. Would you like to stay in the centre or south? Sentence7: Sorry, I was mistaken. There are 3 guesthouses matching your request. One each in the south, north, and west. Would you like to book one? Sentence8: Thank you. Have a nice day. Sentence9: Can you please try a 2 day stay. Sentence10: I can only tell you they are all in the moderate price range. Do you have any other preferences? Sentence11: I am looking for a hotel with a 3 star rating and free parking Sentence12: Either is fine. I'd like a guesthouse. Question: Who has spoken the sentence 5? (A) User (B) System
Answer: (B) System

Sentence1: Are there any that serve north american food? Sentence2: yes. please book for me a table for thee tommorow diner at 8 pm Sentence3: There phone number is 01223312598. Is there anything else I can assist you with? Sentence4: Yes, there is gourmet burger kitchen. It is an expensive restaurant. Would you like me to book it for you? Sentence5: Yes, the University Arms Hotel is located in the centre area and is on Regent Street. Would you like me to book a room for you? Sentence6: Okay can you also help me with a restaurant that serves Cantonese food in the city center? Sentence7: I just need their phone number. Sentence8: I need information on the university arms hotel. Sentence9: No I am good for now, thanks for all of your help. Sentence10: I need more info. Does the hotel have free parking and what is the price range? Sentence11: There aren't any restaurants in the city centre that serves Cantonese food. Would you like to try a different type of cuisine or try a different area? Sentence12: Thank you for contacting us and have a nice day. Sentence13: You asked about a hotel. Would you like to book a room or would you like me to help find a restaurant? Sentence14: It is in the expensive price range, but it does have free internet and free parking. Question: Who has spoken the sentence 9? (A) User (B) System
Answer: (B) System

Sentence1: The cambridge belfry is 4 star hotel in the cheap price range in the west part of town. Do you want me to book this hotel? Sentence2: Great! I want to book it for 5 people and 3 nights starting from tuesday. Sentence3: Booking was unsuccessful. Do you want to try a different day? Sentence4: The hotel should be in the type of hotel and should have a star of 4, Sentence5: Booking was successful. Reference number is : TFAJJNJF Sentence6: Thanks, that's all I need. Goodbye. Sentence7: You're welcome! Have a wonderful day. Bye now. Sentence8: how about thursday? Sentence9: I need to be in the centre. Is there a guesthouse available, if there are no hotels? Sentence10: There is not a cheap hotel in the centre area. Is there another area I can look for you? Sentence11: The alexander bed and breakfast is a 4 star guesthouse, located at 56 saint barnabas road. Sentence12: I am looking for a place to stay. The hotel should be in the centre and should be in the cheap price range Question: Who has spoken the sentence 10? (A) User (B) System

Answer: (A) User