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 would be great - can you give me the price and departure time? Sentence2: I'm going to be in town and am looking to book my departing train out of Cambridge. Can you let me know the times of trains on Sunday? Sentence3: We have many attractions in the town centre. Do you have a specific type of attraction in mind? Sentence4: You got it. The postcode for old schools is cb21tt Sentence5: What is your destination? Sentence6: The price is 8.08 pounds. Would you like to me book a seat? Sentence7: I just want somewhere to spend some quality time with family. Do you have a recommendation? Sentence8: No, I'll do that tomorrow. Could you help me with some places I could visit in the town centre? Sentence9: The departure time is 12:40. Do you just need 1 ticket booked? Sentence10: Thank you that is all I needed. Sentence11: Stansted Airport I need to be there by 13:15. Sentence12: Can I have the postcode? Sentence13: No I still need the price. Sentence14: You are welcome. Thank you for contacting Cambridge TownInfo centre regarding trains and attractions. Goodbye. Sentence15: i said old school. its entrance is free. Sentence16: I have train TR5985 arriving at 13:08 is that okay? Sentence17: Yeah, I would suggest the old schools. Sentence18: Which one would you suggest? Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User