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

Positive Example 1 -
Input: Sentence1:i need a place to dine in the center thats expensive Sentence2: I have several options for you; do you prefer African, Asian, or British food? Sentence3: Any sort of food would be fine, as long as it is a bit expensive. Could I get the phone number for your recommendation?Question: Who has spoken the sentence 2? (A) User (B) System
Output: Answer: (A) User

Positive Example 2 -
Input: Sentence1: Guten Tag, I am staying overnight in Cambridge and need a place to sleep. I need free parking and internet. Sentence2: I have 4 different options for you. I have two cheaper guesthouses and two expensive hotels. Do you have a preference? Sentence3: No, but I'd really like to be on the south end of the city. Do any of those fit the bill? Sentence4: Sure. Does price matter? We can narrow it down and find exactly what you need. Question: Who has spoken the sentence 4? (A) User (B) System
Output: Answer: (B) System

Negative Example 1 -
Input: Sentence1: I am looking for a hotel named alyesbray lodge guest house. Sentence2: i have their info, what would you like to know? Sentence3: I would like to book a reservation for it. Can you help me with that? Sentence4: I sure can. First, I will need to know when you want your stay to begin and how many days you'll be staying. Also, how many people will be staying? Question: Who has spoken the sentence 1? (A) User (B) System
Output: Answer: (A) User

Negative Example 2 -
Input: Sentence1: Hi there! Can you give me some info on Cityroomz?. Sentence2: Cityroomz is located at Sleeperz Hotel, Station Road in the Centre area. It is a moderatley priced hotel with a 0 star rating. Would you like to book a room? Sentence3: Yes please. I need it for 7 people for 3 nights starting on tuesday. Sentence4: How many days would you like to book it for? Question: Who has spoken the sentence 4? (A) User (B) System
Output: Answer: (A) User

Now complete the following example -
Input: Sentence1: Enjoy your trip! Sentence2: Yes, is there an entrance fee? Sentence3: That takes care of my needs today. Take care. Goodbye. Sentence4: price is 4.40 pounds should i book it for you? Sentence5: Yes, please book it for 8 tickets for me and pleases give me the reference number. Sentence6: I would be happy to assist you in finding a train! Can you please advise where you will be traveling to? Sentence7: I have 3 options to choose from: arrival times of 5:52, 7:52 and 9:52. Which do you prefer? Sentence8: I'm also looking for information on the Whipple Museum of the History of Science. Sentence9: I was able to book 8 Train tickets for you at the cost of 35.2 GBP, which is payable at the station. The reference number is 27OF6EO3 . Sentence10: The entrance fee is free. Is there anything else I could help you with? Sentence11: Cambridge. I need to get there by 11:15. Sentence12: I will take 9:52 Sentence13: I need a train. The train should depart from ely and should leave on thursday. Sentence14: Okay, it's a museum in the city centre. Would you like more information on it? Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User