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: The address is saint andrew's street. Sentence2: Efes restaurant is in town centre, serving turkish food and is moderately priced. The address for it is King Street City Centre. Would you like to reserve a table? Sentence3: And a great day to you as well! Sentence4: Great! I booked you in at 18:45 on a Sunday. Your reference number is RZD2U6C2 . Sentence5: We have many colleges, some with an entrance free and some without. Do you have a preferred location or cost concern? Sentence6: I will take one that you recommend. I will need the postcode and address. Sentence7: I am looking for a restaurant called Efes Restaurant. Sentence8: Wonderful. Thank you so much for this! Have a great day. Sentence9: How about churchill college? Address is storey's way, postcode cb30ds. Anything else I can do for you? Sentence10: Can I get the postcode as well for it? Sentence11: The postcode is cb30ds. Sentence12: Thanks. I'd also like suggestions on attractions in town under the college category. Sentence13: Yes please, just for 1 on Sunday at 18:45. I will need a reference number as well. Sentence14: What's the address for Churchill College? Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System