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: Sure. The postcode is cb43ht. Can I help you with anything else today? Sentence2: Royal Spice sounds good. Can you reserve a table for 2 at 17:45 on Sunday? Sentence3: I have found the City Centre North B and B guesthouse. It is cheap and has 0 stars. Sentence4: Sure reference number is CH9ZLEFO Sentence5: The taxi booking has been completed! Look out for a yellow bmw the contact number is 07132659323. Anything else I can assist with today? Sentence6: Let's find me a cheap eatery in the north part of the town. Thank you. Sentence7: Can you tell me the postcode? Sentence8: Great. Thanks for talking to us! Sentence9: I want somewhere with 0 stars and free wifi that is cheap and in the north, just like my restaurant Sentence10: I'm going to need a taxi also. Sentence11: Could you tell me what area you would like to stay in, and if you require parking or wifi? Sentence12: The hotel to the restaurant.... Sentence13: Okay, please tell me where you will depart from, your destination, and a time that you either wish to leave or arrive by Sentence14: There are 2 places in the north that are in the cheap price range. Royal Spice which serves Indian food and Da Vinci Pizzeria. Do either sound good to you? Sentence15: That does it for now, thank you. Sentence16: I also need a place to stay Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User