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: I'm also looking for a train that leaves London Kings Cross on Saturday and arrives in Cambridge by 09:45. Sentence2: ok lets try the gandhi, a table for 4 on sat at 14:15, and I need the reference number Sentence3: I am looking for a restaurant in the centre that serves indian food. Sentence4: Sure, what is your price point? Sentence5: Would it be possible to book that train for 4 people? Sentence6: There are three restaurants: Kohinoor, The Gandhi, and Mahal of Cambridge. Sentence7: I have train TR8885 that leaves at 07:17 and arrives in Cambridge by 08:08. Will that work for you? Sentence8: The booking was successful and your reference number is 57DS952F . Sentence9: Thanks, that's all I needed today! Sentence10: I have made your reservation for 4 tickets on TR8885. The total fee is 75.52 GBP payable at the station and your reference number is KO3L1QDO . Sentence11: as cheap as possible Sentence12: Thank you. Let us know if you need more help. Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System