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: That sounds like the best attraction ever. Thank you for all your careful assistance. Have a lovely day! Bye!! Sentence2: I'm looking for a train. Sentence3: I'll be leaving monday and the departure time doesn't matter. Sentence4: I'm sorry for the confusion. I don't show TR9859. I have TR0607 that leaves at 18:06, arrives at 18:56. Travel time is 50 minutes. Does that work? Sentence5: I am looking for a train that goes to Peterborough from Cambridge and arrives by 19:00. Sentence6: Yes, the price is 16.50 pounds. Can I help you with anything else today? Sentence7: Parkside Pools is a swimming pool located in the centre of town. They are located at Gonville Place. Their postcode is cb11ly. They can be reached at 01223446100. Sentence8: Yes, I am also looking for more information on parkside pools. Can you tell me what kind of attraction it is? Sentence9: And you have a wonderful day as well! Sentence10: Sure that's fine, does that have the same price? Sentence11: What is your departure day and time? Sentence12: for 16.50 pounds TR9859 leaves at 05.56 Sentence13: Okay, does TR9859 arrive by 19:00? I would also like the travel time, please. Sentence14: I'll be happy to help. Can you tell me where you are leaving from and where you are going? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User