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: Your tickets are booked. The reference number is XVS0713S . Can I do anything else for you? Sentence2: There are two trains to choose from, one departing at 05:35 and the other 07:35, do you have a preference? Sentence3: Great I was able to get your table, reference number is 41SZJZMV . Make sure you arrive on time they will only hold the table for 15 minutes. Sentence4: I would like a reservation for 3 people please. I would like a reference number. Sentence5: Nope, thanks for your help. Goodbye. Sentence6: Sure! The fare is 4.40 GBP per person, and it's a short, 17-minute ride. Sentence7: What time would you like to make the reservation for? Sentence8: 15:00 on thursday, please. Sentence9: I certainly can. How many tickets would you like? Sentence10: Perfect! I hope that you enjoy your travels and please feel free to contact us again if you need anything. Goodbye! Sentence11: Can you book it for me? Sentence12: Yeah can you book me a table for 3 on Thursday? Sentence13: Wonderful! That restaurant is located at Market Hill City Centre, and the telephone number is 01223352607. Can I help you with anything else? Sentence14: ok i am also looking for a train on the same day as the sestaurant booking and should arrive by 09:15 should go to cambridge and depart from ely Sentence15: Can I get the price and travel time for the 7:35 departure? Sentence16: Need a certain restaurant called stazione restaurant and coffee bar. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User