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

Sentence1: In the centre yes please. Sentence2: Can you give me the contact number for that taxi you booked? Sentence3: No, thank you. That all sounds good. Sentence4: I need info on the Cambridge and County Folk Museum please. Sentence5: At what time would you like to leave the museum? Sentence6: Anything else I can do for you? Sentence7: What type of car have you booked? Sentence8: I'm also looking to book a taxi between the two locations. Sentence9: Ok, it's called Ali Baba. How many people will be in your party? Also, what day and time would you like? Sentence10: Okay, your table is booked. The reference number is 7GD7F8A8 . Anything else I can do for you? Sentence11: Yes, I will have one pick you up Sentence12: A grey lexus will be picking you up. Can I assist you with anything else? Sentence13: I am sorry but there is not a lebanese restaurant in the west area, but I found one in the centre. Would you like me to book a reservation? Sentence14: Okay do not hesitate to call us if you need something else. Sentence15: No thank you. But thank you for all your help. Sentence16: The museum is located in the west side of town at 2-3 Castle Street. The entrance fee is 3.50 pounds. Their phone number is 01223355159. Shall I connect you? Sentence17: Your booking is completed. You will be picked up by a grey lexux. Can I help you with anything else today? Sentence18: could i get a taxi as well? Sentence19: Absolutely, the contact number for the taxi that I have booked for you is 07503689471. Is there anything else I may assist you with? Sentence20: I would like to make a reservation for 2 people at 19:30 on Tuesday. Sentence21: I just want to make sure I am at the restaurant by 19:30. Sentence22: Yes, I am also looking for a nice, moderately priced Lebanese restaurant in the area. I'd prefer it to be within walking distance of the museum. Question: Who has spoken the sentence 18? (A) User (B) System
Answer: (A) User

Sentence1: I found the Cambridge Belfry. It is located in the west of town. Would you like me to book that for you? Sentence2: No, again, that is all, thank you. Sentence3: No, thanks. That will be all. Sentence4: Absolutely, the fitzwilliam museum's phone number is 01223332900. Is there anything else I can help you with today? Sentence5: Have a great day! Sentence6: The fitzwilliam sounds good. Could I get the phone number? Sentence7: Can I assist you with anything else today? Sentence8: There are 11 museums in the centre of town. A few are the regency gallery, the fitzwilliam museum, castle galleries, and primavera. Sentence9: I'm wanting information about museums in the centre of town. Sentence10: I'm also looking for a hotel that is cheap and includes free parking. Question: Who has spoken the sentence 6? (A) User (B) System
Answer: (A) User

Sentence1: Hi, I need a place to stay with free wifi and in a moderate price range. Sentence2: I have 3 hotels listed that have of your requirements. Do you have any parking needs? Sentence3: Yes I am looking for free parking. Sentence4: I have 17 hotels in the moderate range that offer internet access. Do you have a particular part of town you wish to stay in? Sentence5: No thanks, I am not quite ready to make a reservation yet. Thanks for the information. Sentence6: No, that's all I need. I'm going to give the hotel a call. Thank you for your help! Sentence7: I prefer the eastern part of town and something that is 4-star rated. Sentence8: Excellent. Have a good one! Sentence9: Alright, can I get anything else? Sentence10: carolina bed and breakfast has free parking and is moderately priced. Can I book a reservation for you? Question: Who has spoken the sentence 2? (A) User (B) System

Answer: (A) User