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

[EX Q]: Sentence1: No thank you. That is great. Sentence2: Have a good day! Sentence3: There are three british restaurants in the west. What price range are you considering? Sentence4: Thanks! Sentence5: I'm looking for meals under 30$ a person. I need to book for 3 at 16:15 on Wednesday. Sentence6: The restaurant Saint Johns Chop House is the only restaurant to your specifications with a moderate pricing. Would you like me to make a reservation? Sentence7: Your booking is successful and your reference number is CZT3LA0M . Is there anything else I can help you with? Sentence8: Yes please and I will need a reference number. Sentence9: I am looking for a German restaurant in the west. Sentence10: Enjoy your time! Sentence11: There are no German restaurants available in the west. Would you like to try a different area or different food type? Sentence12: How about one that serves british food instead? Question: Who has spoken the sentence 11? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: That will work. What is the price and arrival time for that? Sentence2: Where would you like to travel from and to? Sentence3: Sure, I have 7 trains that would work. The closest to your requested time is the TR5110 that leaves at 20:34. Sentence4: That will cost you 16.50 pounds and you will arrive by 21:24. Sentence5: Certainly. Home from Home is a guesthouse on the north end of the city. It offers free internet and parking and is moderately priced. Would you like to book a room? Sentence6: The train should depart from cambridge and travel to peterborough. Sentence7: You too. Goodbye. Sentence8: I would like to book a train that is running on Tuesday and departs anytime after 20:15, can you help me with that? Sentence9: Thank you have a nice day. Sentence10: Your booking was successfull! Reference number is I5VKNKJ3 Sentence11: That is great. I also want to know about a hotel called home from home. Can you find it for me. Sentence12: Yes. I would like to book for 8 people for 3 nights starting from Saturday. Question: Who has spoken the sentence 9? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: I'm sorry, I wasn't thinking clearly. I'm looking for a place in the West. I need free wifi as well, please. Sentence2: Sure. The phone number is 01223314960 and it's located at 98 King Street at CB11LN. Sentence3: I need to book 4 people for 5 nights starting friday please Sentence4: Your booking was successful with a reference number EGRKXU88 . Do you need anything else? Sentence5: No, that is all the help I will need today. Sentence6: There are four places to stay in the west that provide internet. What price range would you prefer? Sentence7: Yes, there are two when will you need the room? Sentence8: I'm sorry, but I wasn't able to book for 5 nights. Would you be able to stay a different day, or for a shorter stay? Sentence9: I don't mind cheap as long as it's still reasonably nice. Sentence10: I recommend Finches Bed & Breakfast. It's cheap, but still 4 stars. Would you like a reservation? Sentence11: Thank you so much for all your help! Sentence12: Okay can you provide me with their address, phone number and postcode please? Sentence13: It was a pleasure assisting you. Have a good evening. Sentence14: I assume you mean the center of town? We have many hotels in Cambridge covering all price ranges. Sentence15: You are very welcome. Can I help you with anything else? Sentence16: Does one of those two have free parking? If so, I'll book it for 4 people for 5 nights starting Friday. Sentence17: Can you try just one night? Sentence18: They both have free parking and internet. Would you prefer cheap or moderate priced? Sentence19: Yes, I'm also looking for a museum in the centre of town. Sentence20: How about the Broughton House Gallery? Sentence21: I don't care about the price range, but do you have one that is a guesthouse? Sentence22: I need a hotel close to downtown Cambridge please. Question: Who has spoken the sentence 16? (A) User (B) System
[EX A]:
Answer: (A) User