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: What time would you like to depart from Stansted airport? Sentence2: I'm glad I could be of help, enjoy your stay! Sentence3: Your train reference number is 4FQ0OYNJ . As for lodging, what type of establishment, price range, or area can I look for? Sentence4: I will be departing from stansted airport on wednesday. Sentence5: The departing time is flexible, I just need to get to cambridge by 20:45 please and may I have the price as well? Sentence6: Yes. I am also looking for a place to stay. Sentence7: I would like a three star hotel that is expensive. Sentence8: Oh! Great. Thank you, that's all I need today. Sentence9: There are 2 hotels matching that criteria: Gonville Hotel and The Lensfield Hotel. Sentence10: I need a train arriving in Cambridge by 20:45. Sentence11: The Gonville Hotel is available, and your reference number is 7JS42213 . Sentence12: There are many trains arriving at Cambridge by 20:45. Where would you be departing from, and on which day? Sentence13: I have a train arriving in in Cambridge at 5:52pm on that day. The price is 10.10 pounds. Will this work for you? Sentence14: OK, I need rooms for 7 people for 4 nights, starting on Wednesday. Can you tell me which of the two hotels are available then? Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System