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

Sentence1: i also want a taxi to commute between the two places Sentence2: That's it for now. Thank you for you patient help. Goodbye. Sentence3: book a hotel for 7 people and 2 nights starting from wednesday Sentence4: I have 24 options available. Do you have a specific area in mind? Sentence5: It will be picking me up from the hotel. I'll need the contact number and car type, please? Sentence6: First let's pick one of the 14 guesthouses and then I'll book your room! Sentence7: Absolutely! Your Booking was successful. Reference number is : 7ZCFV2O4 . Is there anything else you need? Sentence8: I need a guesthouse to stay while I'm in town. I don't care if it has free parking or not. Do you have something I could get? Sentence9: We have five parks available. Do you have an area that you would prefer? Sentence10: Yes, I would recommend acorn guest house. Sentence11: I should be able to help you with that. Are you traveling to the Botanic Gardens or from? And what time do you want the taxi for? Sentence12: I'd like someplace in the center, please. Sentence13: There are 14 guest house with internet and moderate price what area would you like Sentence14: Sounds good. There are a lot to chose from, is there one that you specifically recommend? Sentence15: And where would you like the taxi to pick you up? Sentence16: That sounds fine can you book for seven people for two nights starting Wednesday? I'm also looking for a park to visit. Sentence17: You are booked for a white audi with the contact number 07387814664. May I help with anything else, like a restaurant? Sentence18: Yeah, any time I was happy to help. Sentence19: I'm also looking for a park to go to while I'm in town. Sentence20: i want to leave the hotel by 01:15 Sentence21: The Cambridge University Botanic Gardens is located in the centre. It's on Bateman Street. The entrance fee is 4 pounds. Can I help you with something else? Sentence22: No specific area but i do need wifi and a moderate priced guesthouse please. Question: Who has spoken the sentence 4? (A) User (B) System
Answer: (A) User

Sentence1: You're welcome, have a great day. Sentence2: What city are you departing from? Sentence3: Thanks. Can you also look up information on Lovell Lodge hotel? Sentence4: Thank you for the info, that will be all. Sentence5: Can you give me the day you are traveling? Sentence6: I'm leaving on Saturday. May I please have the travel time? Sentence7: i'm leaving from cambridge Sentence8: Can you help me find a train arriving by 12:45 going to birmingham new street? Sentence9: Travel times for all trains on that route are 163 minutes. The TR2576 would get you to Birmingham New Street at 11:44. Sentence10: The Lovell Lodge hotel is located in the north that is 2 stars. It has moderate pricing, free internet and parking. Their phone number is 01223425478. Question: Who has spoken the sentence 5? (A) User (B) System
Answer: (B) System

Sentence1: Yes if you can tell me where you will leaving from and what day and time? Sentence2: Thank you! Can you help me find a train to Norwich, please? Sentence3: Great. I'll call back if I need anything. Goodbye. Sentence4: No. I think that is all. Sentence5: It is a cheap Indian restaurant. Would you like to book a table? Sentence6: My pleasure. Have a great day. Goodbye. Sentence7: what kind of food do they serve and how expensive is it? Sentence8: I need the train to arrive by 21:00. Is there one at that time? Sentence9: I am now looking to dine at mahal of cambridge Sentence10: I am planning a trip in Cambridge Sentence11: Booking was successful, the total fee is 52.8 GBP payable at the station .Reference number is : 8L54O12B . Sentence12: No worries we are here if you need us, have a nice day. Sentence13: On what day would you like a reservation? Sentence14: I can help you find what you are looking for. Sentence15: yes book that for 3 people please Sentence16: Is there anything else I can assist you with today? Sentence17: Train 2662 leaves Cambridge at 21:36 and arrives in Norwich at 22:55. Would you like me to book a ticket for you? Sentence18: Come to think of it, I won't need a reservation. That will be all for today. Thanks for your help! Sentence19: Actually, I would like to book a table at that restaurant. Sentence20: I'll be leaving Cambridge on Monday at 9 PM. Sentence21: May I recommend the TR9246 train arriving at 20:55 Sentence22: Would you like more info or for me to book it? Question: Who has spoken the sentence 13? (A) User (B) System
Answer: (B) System