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

Ex Input:
Sentence1: What day are you travelling? Sentence2: You are very welcome. Enjoy your day too. Bye. Sentence3: I'd like to book 3 tickets on the train arriving at 19:08, please. And would it be possible to have a reference number for the booking? Sentence4: I will need to leave from Cambridge if that's ok Sentence5: I have a train that arrives earlier at 18:08 and one that arrives just before your specified time at 19:08. Sentence6: Sure. Where will you be leaving from? Sentence7: I was wondering if you could help me in finding a train to the airport. Sentence8: OK, you have 3 tickets reserved on TR4447, departing Cambridge at 18:40, arriving Stansted at 19:08. Total fee is 30.29 GBP. Reference #5VRJSMSE . Will that be all today? Sentence9: Yes, it will. Thanks so much. Have a nice day. Sentence10: On Wednesday. I need the train to arrive by 19:15. Question: Who has spoken the sentence 7? (A) User (B) System

Ex Output:
Answer: (B) System


Ex Input:
Sentence1: Booking was unsuccessful. Do you have a different time preference? Sentence2: Is it in the expensive price range? Sentence3: Yes book a table, thank you. Sentence4: I was happy to help, enjoy your meal. Sentence5: Sure, try booking that one for the same people, date, and time, please. Sentence6: Can you please give me a day and time that you would like to book a table for? Sentence7: No, that's all I need. Thank you for your assistance! Sentence8: I am looking for Korean food, in the Centre of town. Sentence9: No. How about finding another restaurant in the same area and price range. Sentence10: I've booked your table for 7 people on Monday at 13:45 at Kymmoy. Your reference number is 1MS5BUU6 . Is there anything else I can help you with today? Sentence11: There is one Korean restaurant in the centre, Little Seoul. Would you like the address and phone number? Sentence12: How about Kymmoy? It's an Asian restaurant in Expensive price range, located in Centre area. Sentence13: Yes, it is expensive. Are you interested in booking a table there? Sentence14: 13:45 on monday and a table for 7 please. I will need a reference number too. Question: Who has spoken the sentence 4? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: The west please. Sentence2: The price does not matter. Please make a recommendation and book it for the same group of people and 4 nights starting from the same day. Sentence3: I have 5 different options for you. They vary in price range. Did you have a certain price range in mind? Sentence4: Definitely! I have places from cheap to expensive, though my favorite is Yippee Noodle Bar, which is moderately-priced. Sentence5: Great, I also need a hotel room if you can help me find something. Sentence6: I'd be happy to make a reservation for you. What day/time will you be dining, and how many are in your party? Sentence7: I would like Yippee. Sentence8: I'd like to find a restaurant that offers Asian Oriental cuisine, in the centre, if possible. Sentence9: OK, you are booked in Cityroomz as requested, the reference number is A1ZBLCZ3, any further questions? Sentence10: There are 4 in that area do you have a price range or type of hotel you prefer? Sentence11: Monday, 19:00, for 6 people. Sentence12: no and thank you for your help Sentence13: Ok, have a great day! Sentence14: I have successfully reserved a table for your party of 6 at the Yippee Noodle Bar for Monday at 19:00. Your reference number is XSQHK9YG Sentence15: Sure. We have several places ready to book. Which part of town would you like? Sentence16: The hotel doesn't need to include internet. It should be in the same area as the restaurant. Question: Who has spoken the sentence 14? (A) User (B) System

Ex Output:

Answer: (A) User