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

Ex Input:
Sentence1: I'm sorry, I only know that it is moderately priced. Can I book a room for you? Sentence2: What is the price range? Sentence3: Is there a particular area of the city where you'd like to stay? Sentence4: No that's all. Thanks! Sentence5: Yes. There are a number of hotels with wifi. Archway House is one of them that I can recommend. Sentence6: You have a nice day. Good bye. Sentence7: Howdy! I'm in town for the night and need a place to stay. I'd like a four star joint with free parking, if you please. Sentence8: no that's fine. Sentence9: Nice! I hope you enjoy this beautiful city, I found 5 hotels for you. What is your price range? Sentence10: Is there anything else you will need today? Sentence11: Archway house is in the moderate price range. They are located at: 52 gilbert road. Anythign else you need? Sentence12: I have 16 guesthouses that are 4 star and have parking, do you have any other requirements to help narrow the search? Sentence13: I don't have a price range. As long as it's nice. Sentence14: Sure, what is its address and price range? Sentence15: Do any of those have free wifi? Sentence16: No, I don't care about the area, either. But do you have a guesthouse? Question: Who has spoken the sentence 1? (A) User (B) System

Ex Output:
Answer: (B) System

Ex Input:
Sentence1: Where are you headed? Sentence2: anytime after 21:00. Sentence3: What time monday would you like to depart? Sentence4: okay, I do need the reference number also. Sentence5: Birgmingham New Street from Cambridge Sentence6: Yes will you book it for me ? Sentence7: I highly recommend Zizzi Cambridge in centere. It has excellent pasta and meatballs. Would you like me to book a reservation for you? Sentence8: Booking was successful. The table will be reserved for 15 minutes. Reference number is : DKSUCWY6 . Sentence9: Yes, on Monday for 2 people at 14:30. Olease give the reference number. Sentence10: thank you that will be all good bye Sentence11: I need 2 tickets and a reference number please Sentence12: My apologies, busy weekend and the system is lagging, you are set, reference number is B6SGLAAT total cost is 150.19 GBP, thank you for your patience. Sentence13: Have a nice day, goodbye. Sentence14: How many tickets will you need? Sentence15: Thank you so much, can you please also find me an Italian restaurant in the centre of town that's on the cheap side? Sentence16: TR8406 will depart at 21:40. Is that okay? Sentence17: I need a train on Monday leaving birmingham new street? Sentence18: Sure thing. I will work on getting this booked for you. Question: Who has spoken the sentence 10? (A) User (B) System

Ex Output:
Answer: (A) User

Ex Input:
Sentence1: What day of the week are you looking to travel? Sentence2: Great! Have a good day. Sentence3: I need a train to go from Cambridge to Norwich. Sentence4: I would like to book that train for 4 people please. Sentence5: Thanks you too Goodbye Sentence6: yeah, I'm also looking for a place to stay. I don't like hotels, so a guesthouse would be better. Moderate in price. Sentence7: can I have the star rating and idf they have wi fi ? Sentence8: a and b guest house is a guesthouse in the east and it is moderate. Shall I book it ? Sentence9: What time would you like to leave or arrive by? Sentence10: OK, that's all I need for now. Thanks. Sentence11: The star rating is 4 and they do have free wifi. Sentence12: I would like to arrive by 13:45. Sentence13: I have the TR7438 that will arrive at 12:55. Would you like a booking made today? Sentence14: Yes, the hotel should be in the east and doesn't need to have free parking. Sentence15: I am traveling on Sunday Sentence16: There are several moderate priced guesthouses do you have a preferred area that you want to stay in? Sentence17: Great. I hope you have an excellent day. Sentence18: 7G6OJ8G2 is your confirmation code. May I help you further? Question: Who has spoken the sentence 10? (A) User (B) System

Ex Output:
Answer: (A) User