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

[EX Q]: Sentence1: Sure. What area would you like to stay in? Sentence2: yes postcode is cb39lh Sentence3: I'd like to stay on the westside, at a place with free parking and WiFi. Sentence4: Can you help me find a moderately priced place to stay? Sentence5: There is the Hobsons House. It is nice and is a 3 star guesthouse. Sentence6: Could you give me the postcode. Question: Who has spoken the sentence 4? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: Have a good day! Sentence2: No thank you, that is all. Sentence3: I am looking for a train to London Kings Cross that departs after 08:15. Sentence4: The TR2000 leaves cambridge going to london kings cross on friday at 09:00. It arrives in london kings cross at 09:51. How does that sound? Sentence5: Yes. What do you have available? Sentence6: Are you departing from cambridge station? Sentence7: I'll be travelling on a Wednesday. Sentence8: That's great. Please book me two tickets. Sentence9: The booking was successful and the fee is 47.2 GBP payable at the station. Reference number is E2N0JHSY . May I assist you with anything else today. Sentence10: What day would you like to travel? Question: Who has spoken the sentence 3? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Do you have a time you want to leave or get there by? Sentence2: 9:21 works perfectly, can I have a reference number for that as well? Sentence3: In what area will you need the room? Sentence4: Hi, can you help me find a cheap hotel with free wifi? Thank you Sentence5: I would like a cheap 4 star guesthouse with free wifi instead. Sentence6: Autumn House is a cheap 4 star guesthouse with free wifi in the East. Would you like me to make a reservation for you? Sentence7: Fell free to call if you need anything in the cause of the day. Sentence8: The Cambridge Belfry is a cheap hotel in the west with wifi, would that be okay? Sentence9: There area does not matter, but I prefer a four star guesthouse. Sentence10: Your booking was successful! Your reference number is 7IWUZFNC . Can I assist you with anything else? Sentence11: Your Reference number is : CZEKL8AL . It will cost 12.8 GBP. Sentence12: That is all I need good bye. Sentence13: I would like to arrive by 11:00. Sentence14: Yes I also need a train. I'm planning to travel from Cambridge to Stevenage on Friday. Sentence15: There are 3 trains that will arrive by 11:00. Would you prefer to leave at 05:21, 07:21 or 09:21? Sentence16: Please for 7 people for 3 nights starting on Tuesday/ Question: Who has spoken the sentence 8? (A) User (B) System
[EX A]:
Answer: (A) User