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

[EX Q]: Sentence1: I'm departing from the oak bistro. Sentence2: I have the taxi ready for you Sentence3: I would like to leave after 17:00. Sentence4: Hi, I need a tax to queens' college please. Sentence5: What time would you like to leave? Sentence6: What is your departure site? Question: Who has spoken the sentence 2? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: No, that's all I needed. Thank you for your help - goodbye! Sentence2: I will take the one that arrives at 15:08. can you make me a booking for 8 people on Wednesday? I will need a reference number. Sentence3: The train should depart from Cambridge on Wednesday and headed for Stansted Airport. It should arrive by 15:15. I would also like you to make a booking for 6 people. Sentence4: I'm looking for a train. Sentence5: I have two trains that would suit you. One arrives at 14:08 and the other at 15:08. Do you have a preference? Sentence6: I have 2,828 trains with different routes, to help narrow it down, where will you be departing/arriving, and what day/time? Sentence7: It was a pleasure to assist you. Please use us again for your future needs. Have a good day. Sentence8: Sure thing! I've booked the train for 8, and your reference number is I62H3VUY . Is there anything else I can do for you today? Question: Who has spoken the sentence 1? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: the missing sock serves international food, they are located at Finders Corner Newmarket Road. Sentence2: Bye bye. Sentence3: Thanks, see ya! Sentence4: I'd like a cheap restaurant in the east part of town. Sentence5: You're welcome. Good bye, and please come back to the Cambridge restaurant system if you need further assistance. Sentence6: May I have the street address of the establishment. Sentence7: What type of food is served at the Missing Sock, and what is the address? Sentence8: The address for The Missing Sock is Finders Corner Newmarket Road. Would you like their phone number or postcode? Sentence9: What is the address? Sentence10: Their address is Finders Corner Newmarket Road. Sentence11: The Missing Sock serves cheap food in the East part of town. Sentence12: Thank you. Goodbye. Question: Who has spoken the sentence 11? (A) User (B) System
[EX A]:
Answer: (B) System