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

[EX Q]: Sentence1: The phone number is 01223420060 and the post code is cb46az. Sentence2: Ok. I booked four tickets for you. Your reference number is FRSZ5A8R . Can I help you with something else? Sentence3: Yes. Book for 4 people. Sentence4: I would like the phone number and postcode for it please. Sentence5: What information are you looking for? Sentence6: Sounds great, before i let you go, I just want to make sure we have covered everything that you need. Sentence7: yes you did Sentence8: TR6806 will leave at 10:01 and arrive at 11:01. The trip will take 60 minutes and it will cost 17.90 pounds. Would you like to book? Sentence9: Thank you! That's all I needed, thanks so much. Sentence10: enjoy your stay in Cambridge! Sentence11: I'm going from cambridge to broxbourne any time after 09:15. Sentence12: I show 404 rail departures on Thursday, can I get something specific for you? Sentence13: I want a train leaving on thursday. Sentence14: Im also looking for a place by the name of milton county park. Question: Who has spoken the sentence 4? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: Yes, all of the listed entrance fees are 5 pounds. The Club Salsa is nice. Sentence2: Have fun! Goodbye! Sentence3: Club Salsa's address is 1 Station road and their phone number is 07782218745. Sentence4: No thanks. That's it. Sentence5: Location doesn't really matter. Is there an entrance fee? Sentence6: Yes, would you like to find a nightclub in the centre or south part of town? Most of them are in the centre. Sentence7: Club Salsa sounds right up my alley. Can I get the address and phone number please? Sentence8: Can you find information about nightclubs? Sentence9: You're welcome. Can I help you with anything else? Sentence10: Okay, great! Thanks for your help! Question: Who has spoken the sentence 7? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: I would like the oak bistro. Sentence2: Yes, table for 2 at 13:30 on Friday. If not available then Tuesday. Need reference number as well. Sentence3: ballare's phone number is 01223364222. Can I get you anything else? Sentence4: No, we are all set, thanks for making this trip easier. Sentence5: Great choice. It is at 6 Lensfield Road. Would you like a reservation? Sentence6: Yes can I get the phone number of one you'd recommend? Sentence7: It was my pleasure to be of service. Goodbye. Sentence8: I'd like a moderately priced one. Sentence9: I made the booking for Friday. Your reference number is 0Z3UX3DM . Do you need anything else? Sentence10: I am seeking a restaurant that serves British food in the centre. Sentence11: There are 4 restaurants that match that criteria which are Restaurant One Seven, The Oak Bistro, The Copper Kettle, and Cotto. Which one would you be interested in? Sentence12: There are 5 nighclubs in the centre. Would you like more information on them? Sentence13: I have about 7 different options for you. Do you have a certain price range in mind? Sentence14: I'd also like a nightclub to go to in the same area as the restaurant. Question: Who has spoken the sentence 5? (A) User (B) System
[EX A]:
Answer: (B) System