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

Sentence1: Great I was able to book A and B guest house, the reference is VMWIVZV7 . Sentence2: I would like to book a table at the Italian restaurant for 8 people on Thursday at 14:45. Can I have the reference number for that as well? Sentence3: I'm looking for a place to stay in the moderate price range. It doesn't need to have free parking. Sentence4: Okay you're all set. Your reference number is U37O50HC . Is there anything else? Sentence5: Not a problem, have a great day! Sentence6: I was able to book a blue honda, phone number is 07521143616 Sentence7: It should be on the east side, and have free wifi, no food preferences though. Sentence8: I have 3 results for moderately priced guesthouses on the east side. All have 4 star ratings and free wifi, do you need parking? Sentence9: Yes, I would like to book a taxi from the hotel to the restaurant. Sentence10: Great thank you for all your help Sentence11: Thank you for your help in booking the hotel for me! Sentence12: I do not need free parking. Can you book one of them for Thursday? I have 8 people and we need to stay for 2 nights. Sentence13: I also also need a place to eat in the moderate price range in the same area as the hotel Sentence14: There are quite a number of hotels that fit your description. Any preferences in location or food served? Sentence15: You are welcome. Goodbye! Sentence16: Sure I have two Indian restaurants and one Italian restaurant pizza hut fen ditton matching your price and area preference. Do any sound good to you? Question: Who has spoken the sentence 4? (A) User (B) System
Answer: (A) User

Sentence1: Kymmoy is a great Asian Oriental place in the center of town, but it's expensive. Sentence2: Is there a Oriental restaurant in the City Centre that is in the expensive price range? Sentence3: I have 2 matches. Do you have a type preference? Sentence4: Thanks. I'm also wanting to see if there's someplace to get polynesian food in the centre of town. Sentence5: That's all I will need. Thank you! Sentence6: Where is it located? Sentence7: Please help me find a hotel to stay at in the centre that has a 4 star rating. Thanks! Sentence8: Thank you for using the Cambridge TownInfo centre. Please have a pleasant day. Sentence9: There are no Polynesian restaurants in the centre. Sentence10: I want an expensive place with free wifi. Sentence11: Its location is on Regent Street. Sentence12: That narrows it down to one choice, the University Arms Hotel. It meets all of your requirements, plus has parking. Would you like me to check availability? Question: Who has spoken the sentence 10? (A) User (B) System
Answer: (A) User

Sentence1: Yes to both. Sentence2: Glad to help. Goodbye! Sentence3: Thanks. I'm also interested in going to the Chiquito restaurant bar. Can you make a reservation there? Sentence4: Sure what time and how many people? Sentence5: I was able to book that hotel for you for 2 nights. The reference number is 8LCNFKVO . Sentence6: I will need a time before I can book. Sentence7: There are 2 guesthouses and 3 hotels in the city centre, do you prefer one or the other, or are there any amenities that you'd like? Sentence8: Sure, how about two nights? Sentence9: No, I am all set. Good bye. Sentence10: Yes, I would like it to have free wifi. Sentence11: Do they offer free wifi or free parking? Sentence12: Could you also get me a taxi that arrives at the restaurant by the booked time? Sentence13: Unfortunately that didn't work. Do you want to shorten your trip? Sentence14: For 5 people on Wednesday please. Could you also provide the reference number. Sentence15: Thank you for all of your help. Sentence16: Is there anything else I can help you with? Sentence17: Great. Please book it for 5 people for 5 nights starting from wednesday. Sentence18: I've booked it for you, your reference number is S7P7SXVN . Sentence19: A red ford car will arrive at 10:30 to pick you up at your hotel to take you to the restaurant. The contact number is 07751377592. Sentence20: Hi, I'm looking for a place to stay in the centre. Sentence21: The Alexander Bed and Breakfast is a 4 star guesthouse that is cheap. Does that interest you? Sentence22: It will be for 11:00 on the same day Question: Who has spoken the sentence 16? (A) User (B) System

Answer: (A) User