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: Thanks for using the Cambridge TownInfo centre and have a great day! Sentence2: Yes, it is 8 mercers row, mercers row industrial estate and the postal code is cb58hy Sentence3: Unfortunately the entrance fee is not listed. Can I help you find anything else? Sentence4: I'm looking for a train that departs from Ely anytime after 20:15. Sentence5: Yes I need the price. Also, I am traveling in the east, can you recommend a good place to go? Sentence6: Where will you be going, Cambridge? Sentence7: 4.40 pounds payable at the station. The funky fun house is a great place for entertainment. I can't quote the price on that though sorry. Sentence8: TR0292 will leave at 21:35 would that work for you? Sentence9: Thats okay. Can i just have their address and postcode? Sentence10: I will be traveling on Friday. Sentence11: I have many. Which day would you be traveling on? Sentence12: Can you tell me the entrance fee please? Sentence13: No thanks. I think that answered all my questions. Have a nice day. Bye. Sentence14: Yes I will be going to Cambridge. Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User