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: You're welcome. Call back if you need further bookings or assistance. Sentence2: On Friday after 10. Sentence3: What you are looking for can not be found. Is there any other area you would mind searching in? Sentence4: Can you also give me the travel time? Sentence5: Thanks! Can you also see if there are any expensive, 4-star guesthouses in the north area of town? Sentence6: Yes, that will be great. How much does a ticket cost? Sentence7: A ticket is 23.60 pounds. Sentence8: Okay. What day will you be traveling? Sentence9: Avalon is a moderate priced 4 star guesthouse in the north part of town. It has free internent. Would you like more information or can I book it for you? Sentence10: Can you book it for 4 people and 4 nights starting from Monday? Sentence11: The travel time is 51 minutes. Sentence12: Booking was successful.Reference number is : 1VF2W9YC . Sentence13: The TR1502 leaves friday at 11:00. Sentence14: No I want to stay in that area. What other hotel accomadations are in the area? Sentence15: I need to take a train from Cambridge to London Kings Cross, it would need to be after 10. Sentence16: Thank you! That is all. Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System