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

[EX Q]: Sentence1: I'm leaving from Cambridge and going to Birmingham New Street. Sentence2: There appear to be hourly trains from 05:01 to 23:01. Do you know what day and time you'd like to travel? Sentence3: You are welcome. Have a great trip. Bye. Sentence4: Wednesday and it should leave after 18:00. Sentence5: Can you also direct me to some attractions in town in the east? Sentence6: Ok, I have booked you 3 seats on that train. Your reference number is MI5RMEHQ . You'll need to pay 225.3 GBP at the station. Anything else I can do? Sentence7: That sounds good. Can you book that for me for 3 people? Sentence8: I'm planning my trip there, but need to find a train for when I depart. Could you help me with that? Sentence9: The TR1766 leaves at 18:01 and arrives at Birmingham new street at 20:44. Would that be OK? Sentence10: The address is 5 greens road and the phone is 01223902168. Is there anything else that i can do for you? Sentence11: That would be perfect. Can you give me the address and the phone number? Sentence12: Sure. From where will you be departing, and what is your destination? Sentence13: No, that is all. Thanks for your help. Sentence14: Of course! There are several attractions in the east. I'd suggest Cambridge Artworks; it's a museum with free entrance. Would that work for you? Question: Who has spoken the sentence 3? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Yes, what type of attraction is Cherry Hinton Water Play? Sentence2: Please book it and send me the confirmation code. Sentence3: Again thank you and have a great day. Sentence4: Thanks I'm also looking for a train that leaves on Thursday. Sentence5: Just one seat. Sentence6: OK, what are your departure and arrival stations, and what time do you want to travel? Sentence7: Before i book it, could you confirm the number of seats you need? Sentence8: You're welcome! Is there anything else I can help you with? Sentence9: It is a park. Sentence10: Excellent, I can't wait to visit it! Thank you. Sentence11: I am looking for information about the the Cherry Hinton Water Play Sentence12: excellent, have a great day! Sentence13: I'd like to go to Cambridge via Broxbourne. I'd like to leave on Thursday and arrive no later than 12:00. Sentence14: That is a free park on the east side of town. They are located at Cherry Hinton Hall on Cherry Hinton Road. Their phone number is 01223446100. Sentence15: I have on that arrives at 11:32. Would you like me to book that for you? Sentence16: Perfect thanks for the help thats everything I need! Sentence17: Well I glad i can help enjoy your stay ! Sentence18: Your booking was successful! The reference number is 698RE4W1 . The total fee of 17.89 is payable at the station. Question: Who has spoken the sentence 17? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: A grey ford will arrive to take you to gonville hotel. The contact number is 07759806308. Anything else today? Sentence2: I would like a hotel with free wifi located in the centre. Sentence3: Sounds good, can you book it for me for Wednesday, 3 nights and 4 people? Sentence4: Do you have a price range in mind? Sentence5: Hotels do not have entrance fees. Gonville hotel is located at gonville place in the postcode cb11ly. Anything else for you? Sentence6: The Gonville Hotel is in the expensive price range but is 3 star. The only moderate price hotel in that area is Cityroomz but is a 0 star rating. Sentence7: Can you book me a taxi to pick me up at the Botanic Gardens at 3:30? Sentence8: Thank you, have a great day Sentence9: I am sorry, I am looking for a park near the hotel. I need the entrance fee, phone number and postcode for the park. Sentence10: You can book that on for me. I will need the entrance fee, phone number, and postcode. Sentence11: A moderate price range would be perfect. Could you make sure it also has a star rating of 3? Sentence12: The gonville hotel meets your requirements. Sentence13: No thank you, that's all for today. Goodbye! Sentence14: The Cambridge University Botanic Gardens is a park nearby. Their phone is 01223336265, the post code is cb21jk, it's located on bateman street. Question: Who has spoken the sentence 3? (A) User (B) System
[EX A]:
Answer: (B) System