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: Does that train leave on Wednesday and go to Cambridge? Sentence2: ok thank you. I would like to book a ticket on TR4351 since that is the closest time you guys have. Sentence3: I need a train from leicester that leaves after 14:30. Sentence4: The travel time is 105 minutes. Is there anything else you need? Sentence5: No, just pick one and book it and provide me with the reference number please. Sentence6: What area would you like the indian restaurant to be in? Sentence7: That's great you've been a big help. Sentence8: The earliest train that day leaves at 15:09. Do you want to book it? Sentence9: Can you tell me what the total travel time is for the entire ride? Sentence10: Glad I could help, have a great day. Sentence11: Just a table for 1 at 18:45 on Wednesday please Sentence12: What day, time, and party size would you like to book? Sentence13: I would like it in the west please. Sentence14: I'm also looking for a expensive indian restaurant. Sentence15: I found 5 restaurants that are expensive Indian restaurants in the west area. Do you want information on all of them? Sentence16: It arrives at 16:54 and is 37.80 pounds. Is there anything else you need? Sentence17: I have booked your table for 1 on Wednesday at 18:45 at Cocum. They will hold your table for 15 minutes. Your Reference number is : JZ2XD42N . Sentence18: What time will it arrive? How many minutes does it take to get there? Can you tell me the price? Question: Who has spoken the sentence 16? (A) User (B) System
Output: 


Answer: (A) User