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: That's all. Thank you for the help! Sentence2: That's ok. I need a taxi to take me to and from the hotel and pool. I want to leave the pool by 02:15. Sentence3: What is the price range for the Acorn guest house? Sentence4: Kings Hedges Learner Pool will still be fine. I'd like a taxi to pick me up there at 02:15 and take me to the Acorn Guest House. Sentence5: Unfortunately, I do not have any that are in the expensive range. I have several 4-star moderately priced hotels or can I look for something else for you? Sentence6: The price there is moderate. Sentence7: Let's go with Kings Hedges Learner Pool. Sentence8: There are two swimming pools in the north, Jesus Green Outdoor Pool and Kings Hedges Learner Pool. Do you have a preference between the two? Sentence9: On the swimming pool, what's the phone number and entrance fee? Sentence10: I'm not looking to book yet, can you tell me their price ranges? Sentence11: What area of town and what is your price range? Sentence12: Please pick a pool first; Jesus Green Outdoor Pool or Kings Hedges Learner Pool? Sentence13: Great! I have a yellow toyota picking you up at 02:15. The contact number is 07441551293. Is there anything else I can assist you with? Sentence14: I guess I'll change my price range. Are there any expensive hotels with all the amenities that I'd like along with free parking? Sentence15: I need somewhere to stay. Should have free parking and free wifi Sentence16: What day do you need your reservation and for how many people and how long will you stay? Sentence17: I need one near a swimmingpool. Sentence18: Their phone number is 01223353248. As for entrance fee, I don't have the information to provide to you. I apologize. Sentence19: There are two Swimming pools in the north. There are no hotels with 4 stars, moderate price range, internet and free wifi. Would you like to change your search? Sentence20: We will have to know which hotel you are staying at first before booking a taxi. Sentence21: No problem at all. Have a great day. Sentence22: Okay. Is there a hotel close to Kings Hedges Learner Pool that has free parking and wifi? I would prefer a four star location in the north. Sentence23: The centre of town and with a moderate price range. Nothing too expensive. Sentence24: There are seven that meet those requirements. Might I suggest the Acorn Guest House? I've heard it's quite nice. Sentence25: There are 6 hotels in the north part of the city that fall in the moderate price range, have free wifi and parking, and have 4 stars. Any other specifications? Sentence26: I don't need to make a reservation. I am just looking for information on a hotel. Can you help me find a 4 star hotel in the North? Sentence27: They're all in the moderate price range. Sentence28: Thank you! I'd also like to find a swimming pool in the area. Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System