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 have made a reservation at Charlie Chan for 2 people on Monday at 17:15. The reservation reference is 9ygetj1 . The table will be held for 15 minutes. Sentence2: Thanks, that's all I need. Have a nice day. Sentence3: Sure, adc theatre's postcode is cb58as and the address is park street. Sentence4: Any area is fine, can you give me the address and postcode of the closest theater to centre? Sentence5: There are several theatres located in the city centre. Is that the correct area? Sentence6: Okay, I have three options that meet your needs. Charlie Chan, Rice House, and Golden House. Would you like me to make a reservation for one of those? Sentence7: Great! Do you have a good chinese restaurant in centre that I could go to. Sentence8: Make a reservation for Charlie Chan. Book a table for 2 people at 17:15 for Monday. Sentence9: Thank you! Sentence10: I have 10 chinese restaurants ranging from cheap to expensive. Is there any limits on what you would like? Sentence11: Yes, I am looking for a theatre in the town. Sentence12: I'd like a cheap Chinese restaurant, please. Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System