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 only expensive Thai restaurant in the center, Bangkok City, doesn't have any availability at that time. Would you like to try something else? Sentence2: I found 14 trains. What day do you want to travel? Sentence3: And what is your destination for that trip? Sentence4: No thank you. I am interested in finding an expensive place to eat in the centre of town. Any recommendations? Sentence5: Thank You! Goodbye. Sentence6: I need a train that leaves Cambridge at 21:30 Sentence7: Alright, you're booked at 11:45 at the Meze Bar Restaurant. Your reference number is UXHS88M3 . Will that be all for today? Sentence8: Yes, that's everything I needed. Thank You! Sentence9: I want to go to London Liverpool Street Sentence10: The price is 16.60 pounds. I have 2 matching trains. One arrives by 23:27 and the other arrives by 01:27. Do you want to book either? Sentence11: Thrusday. Can I also ask the price of these trains? Sentence12: I have many restaurants like that. What kind of cuisine are you looking for? Sentence13: I am looking to book a table for 2 at 12:45 on Thursday at a thai restaurant. Sentence14: Can you change the booking time to 11:45, and try again? Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User