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: It is entertainment and I do not have any information here on the price. Sentence2: Sounds good! I need a table for 3 people at 19:45 on Thursday. Sentence3: Booking was successful. The table will be reserved for 15 minutes.Reference number is : P5WGME15 . Sentence4: What kind of attraction is that and how much does it cost to get in? Sentence5: Hi, I'd like to find someplace to go in the west. Sentence6: THank you that is all I need today. Sentence7: There are 13 places you can visit. Do you have a preference? Sentence8: You're welcome. Let me know if I can assist with anything else. Sentence9: Here is a good one the slug and lettuce. Sentence10: Can you find me something expensive in the Cambridge area that serves Gastropub food? Sentence11: I don't know what there is, so it's hard to say. Could you recommend something interesting or unusual? Sentence12: Whale of a Time guarantees you'll leave with a smile. Would you like the address or phone number? Sentence13: I also need to find an expensive restaurant that serves traditional food please. Sentence14: I'm afraid there aren't any in Cambridge. Is there a different cuisine you might like? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System