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

Sentence1: I don't care when I arrive, but I need to leave after 10:00. Sentence2: Perfect, thanks so much for your help. Sentence3: Yes. Wednesday please. Sentence4: I have successfully make a booking for 5 on that train. Sentence5: Sounds great. Can I get their postcode please? Sentence6: Is there anything else I can assist you with today? Sentence7: Can you find me a train from Stansted Airport? Sentence8: Alright, thanks for contacting Cambridge TownInfo centre! Have a good day. Sentence9: TR0467 leaves the airport at 10:24. Would you like tickets for that train? Sentence10: No that is everything. Have a good day. Sentence11: Queen's college is an excellent choice. Sentence12: The postcode for Queen's College is cb39et. And the reference number for your train (booked earlier) is WMUC700A . Sentence13: Can I have the reference number please? I'm also looking for some places to go, maybe a college in the west. Sentence14: Not a problem. Any day in particular? Sentence15: There are plenty of options. Where will you be arriving and do you have a time preference? Sentence16: Yes, for five please. Question: Who has spoken the sentence 14? (A) User (B) System
Answer: (A) User

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
Answer: (A) User

Sentence1: im glad i was of some help Sentence2: Can you help me find a train arriving at 18:15 going to cambridge? Sentence3: I'll need passage for five, but I also need to know what time the last train gets there before 18:15. Sentence4: Sure thing, would you like me to book this for you? Sentence5: Thanks again, thats all for now. Sentence6: Is there anything else I can do for you? Sentence7: That'll do. I'll need 5 tickets. Sentence8: It is at colville road, cherry hinton, postcode cb19ej, phone 01223576412. Sentence9: Okay, thank you. Sentence10: I am leaving Peterborough going to Cambridge on Monday and I need to get there by 18:15, can you help me with that? Sentence11: no thats all for today Sentence12: Monday would be best please. Sentence13: I need to find some place in the east for multiple sports. I'd like to get the address, phone number, and postcode please. Sentence14: which day do you want to travel to narrow down my options Sentence15: Sure! Where are you heading in from? And what day? Sentence16: Okay. Enjoy your visit to cambridge! It's a wonderful place. Sentence17: Booking was successful, the total fee is 82.5 GBP payable at the station . Reference number is : CWLKMZER . What else can I do for you today? Sentence18: how about TR3021? it leaves at 05:19 Question: Who has spoken the sentence 5? (A) User (B) System

Answer: (B) System