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 four different swimming pools I can recommend. First, can you specify if you prefer the centre, east, or north area? Sentence2: I wish to go to a swimmingpool in Cambridge. Sentence3: There are 8 trains that would work on Wednesday. Do you have a departure time in mind? You could leave london as early as 07:39 or as late as 17:39. Sentence4: No, that will be everything. Goodbye. Sentence5: The address is gonville place and their phone number is 01223446100 Sentence6: The train booking is confirmed, number KJ1FLZL5 is your confirmation number. The fee is 16.6 GBP. Anything else I can help you with? Sentence7: Thank you for contacting Cambridge TownInfo Centre! Have a great day! Sentence8: Thanks. I also need to check on trains. I need to travel on Wednesday. Sentence9: I don't care about the departure time so please give me the ID and price of any one of those trains. Sentence10: Okay, the trainID is TR7020 and the price is 16.60 pounds. Sentence11: I need to leave london liverpool street and be in cambridge by 21:00. Sentence12: There are many trains fitting your criteria. Can you give me departure site, destination, and time preferences? Sentence13: I would like to book that train. Thank You Sentence14: Can you tell me the address and phone number for the one in the center of town? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System