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

Example Input: Sentence1: Tuesday please at 18:15 for 6 people. Sentence2: Your booking at the Gonville Hotel was successful. The reference number is FHD472H3 . Can I help with anything else today? Sentence3: We have an expensive hotel called gonville hotel with free internet and parking. Would you be interested in booking a room here? Sentence4: Thanks, you have been very helpful. That is all I needed. Bye. Sentence5: I 'd like to find a hotel in the same area, one with three stars. Sentence6: What sort of dining does Cambridge offer in the centre, in the moderate price range? Sentence7: Yes it has free wifi and free parking. Sentence8: There are 21 different choices. What kind of food are you looking for? Sentence9: Your table at Ali Baba is booked, reference #NYH3ZPQN . Is there anything else I can help you with today? Sentence10: That sounds perfect. Can you book a reservation for 5 nights starting on Tuesday for 6 people? Sentence11: That will work can you make a reservation and send me the reference number please? Sentence12: I would like some christmas food. Sentence13: How about somewhere with Lebanese food? Sentence14: Thank you for using Cambridge TownInfo. Have a great day! Sentence15: Does it have free wifi? Sentence16: I'm sorry. I could not find a restaurant that meets that criteria. Would you like to try something else? Sentence17: of course, what day shall i make the reservation for? Sentence18: Yes, there is a moderately priced Lebanese restaraunt in the centre named Ali Baba. How does that sound? Question: Who has spoken the sentence 9? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Right, Saturday, did you have a time you want to leave by? The trains leave every 30 minutes starting at 5:19 Sentence2: No I think that will be it, thank you for your help! Sentence3: Your booking was successful. Reference number is PR8JE3DU and total is 39.59 GBP. Can I help you with anything else today? Sentence4: Saturday from Peterborough to Cambridge for 3 people. I will need the reference number too please. Sentence5: It doesn't matter when I leave, as long as I arrive by 12:45. Sentence6: I wish to arrive before 12:45. Sentence7: There are 38 trains from Peterborough to Cambridge on Saturday, all throughout the day. Can narrow down the time of day you wish to travel? Sentence8: Yes, for the same group of 3 people from before. Sentence9: I am looking for moderately-priced three-star guesthouse in Cambridge. Sentence10: There are four guesthouses that meet your criteria. Do you need internet or parking? Sentence11: I have booked your stay at the alpha-milton guest house. The reference number is HS3MWJ10 Sentence12: I have located one hotel matching your search criteria, the Alpha-Milton Guest House. The phone number is 01223311625. Would you like to make a reservation? Sentence13: Sure. I will need to know how many people you would like to book it for, what day you would like and how many days you would like to stay. Sentence14: TR5538 leaves at 11:48 and will arrive by 12:38. Would you like for me to book this train for you? Sentence15: I'll need the reservation for 3 people starting Saturday for 4 nights. Sentence16: I would like to call them myself please. Thank you. Sentence17: Thank you, I will also need a train from Peterborough to Cambridge on Saturday. Is there anything available? Sentence18: Sure. Is there anything else I can help you with today? Sentence19: Yes please. Can I actually have you book them? I need the reference number as well. Sentence20: There are 14 trains arriving by that time. When would you like to leave? Sentence21: You're welcome. Enjoy your time in Cambridge! Sentence22: It doesn't need to have free parking and I don't care about the internet. Which guesthouse can accommodate for 3 people? Question: Who has spoken the sentence 13? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Hello, I will be in Cambridge later on this week and I can't seem to find King's college. I am not sure how to find it, can you help? Sentence2: I've booked you on TR8185, for 7 people. It departs Cambridge at 13:36 and arrives in Norwich at 14:55. Sentence3: There is no entrance fee, Kings College is FREE! Sentence4: And what's the entrance fee? Sentence5: I have a train that departs from Cambridge at 13:38 and arrives in Norwich by 14:55. Would you like to place a booking? Sentence6: I would like to arrive by 15:15. Sentence7: No, that was all I needed today. Thank you for your help. Sentence8: Thank you for using our system! Sentence9: The booking reference number is 9SDIIVSB . Anything else I can help you with? Sentence10: Thank you. Can I have the reference number for that booking? Sentence11: I found 133 trains going to norwich, what date, time or station will you be leaving from? Sentence12: There are 19 that leave on Sunday from Cambridge. Do you want to depart or arrive by a certain time? Sentence13: Yes, Kings College is in the center of town and the address and postal code is King's Parade, cb21st respectively. Sentence14: I would like to make a booking for 7 people please. Sentence15: I would like to leave on Sunday and depart from cambridge. Sentence16: That's great! Can you also help me find a train going to norwich? Question: Who has spoken the sentence 1? (A) User (B) System
Example Output:
Answer: (B) System