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: Thanks. Now can you look up a welsh food restaurant that is expensive and in the centre? Sentence2: You're welcome. Enjoy your visit. Sentence3: I want to take a train from Stevenage to Cambridge. Sentence4: Yes there is one option here. It is little seoul. What day and time for your booking? Sentence5: I don't need to purchase tickets today, but can you tell me the train ID and the total travel time to get me there? Sentence6: What is the price of a ticket, please? Sentence7: I Would like it on Monday at 18:15. Sentence8: Booking was successful. The table will be reserved for 15 minutes. Your Reference number is : X54JY6CB . Sentence9: Thanks, that's all I needed today! Sentence10: Can you please try again? Sentence11: I would like to leave on Monday and arrive in cambridge by 12:45. Sentence12: For how many people? Sentence13: TR9062 will take 49 minutes, from 11:54 to 12:43. Do you need anything else? Sentence14: Oh darn it! How about... maybe korean food? Still in the centre, and they need to be able to seat 7 people. Sentence15: It isn't allowing me to book that for you. Is there anything else I can try for you? Sentence16: What day and time do you want to leave Stevenage? Sentence17: Departure time isn't important as long as I can get there by 12:45. Sentence18: I have 4 trains available. What time would you like to leave? Sentence19: The price of TR9062 is 12.80 pounds. Sentence20: I'm sorry I couldn't find any welsh restaurants matching that criteria . Would you like to try a different area or type of food? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User