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

Ex Input:
Sentence1: that is great! thank you for all your help. Sentence2: I need help finding an expensive restaurant in the centre, can you help me please? Sentence3: Thank you for calling and have a great day. Sentence4: I have found the backstreet bistro and the slug and lettuce, which one would you like more information on? Sentence5: Yes both are in the expensive price range Sentence6: I'd love to help. We have 33 expensive restaurants. Do you have a cuisine you'd prefer? Sentence7: Do anything of them serve gastropub food? Sentence8: I want to book a table for 4 people at 16:15 on a Tuesday please. Sentence9: Can I have the munber in your party and the day and time you would like to book? Sentence10: Great! Here is the address, 34 - 35 Green Street. Sentence11: Okay I was able to book you then at The Slug and Lettuce and your reference number is FSOF58OO . Sentence12: Yes, I'm looking for gastropub food. Sentence13: Thank you so much. That is all I need. Sentence14: Any one will be fine. I need the reference number please after its booked. Question: Who has spoken the sentence 2? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: I need to leave on Wednesday sometime after 16:30. Sentence2: There are 21 guesthouses that include parking. Is there a price range or area you would like to stay? Sentence3: I need some help choosing a train from Cambridge to London King's Cross. Sentence4: It doesn't matter, we will also need wifi, and will be staying for 2 nights, starting on Monday. Sentence5: That sounds great. Can you go ahead and book it for me? Sentence6: I would recommend the Alexander Bed and Breakfast then. Sentence7: Your welcome! Please have a nice day! Sentence8: I have a train leaving at 17:00 and arriving at 17:51 would you like to book this? Sentence9: That's lovely. We also require lodging. Could you help find a guesthouse with free parking? Sentence10: Thanks so much! I'm all finished now, goodbye! Sentence11: Yes please make a booking for 3 people. Sentence12: Alright I booked it. Reference number is I5AR5Q3J Sentence13: The booking was successful. Reference number is : IGMRVY4Y Sentence14: The next train leaves Cambridge for London Kings Cross on Friday at 05:00. What day do you want to travel? Question: Who has spoken the sentence 9? (A) User (B) System

Ex Output:
Answer: (B) System


Ex Input:
Sentence1: Please. I need a reservation for 8 people at 12:45 on Sunday. Sentence2: Booking was successful. Reference number is : EI63A77M . Is there anything else I can help you with? Sentence3: no, it should be a guesthouse though. Sentence4: Yes for 8 for 3 nights starting sunday Sentence5: There is only one Korean restaurant in all of Cambridge, but it's expensive, not moderate. Sentence6: la tasca is a spanish restaurant located in the centre. Can I book that for you? Sentence7: I'm hoping to find a moderately priced korean restaurant. Sentence8: Yes, I would also like a hotel with free wifi in the moderate price range. Sentence9: No that is all the help I need today. Thank you Sentence10: Can you run one more search for korean cuisine in the centre area please? Sentence11: Okay what about spanish cuisine then? Sentence12: Alright, the table is booked for 12:45 and will be reserved for 15 minutes and your reference number is GIBFWDNM . Can I help you with anything else? Sentence13: Do you have an area in mind? Sentence14: I'm sorry, we don't have anywhere that matches that description. Is there somewhere else I can try and find for you? Sentence15: a and b guest house is in the moderate price range. Should I book it? Sentence16: Sure thing. Enjoy your stay Question: Who has spoken the sentence 4? (A) User (B) System

Ex Output:

Answer: (A) User