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: Great! Any chance I could get a table for 7 there at 14:30 on Wednesday? I'll need the reference number once you make the reservation. Sentence2: I'll go with the 17:29. What is the train ID and price? Sentence3: Excellent. Where is it? Sentence4: Can you tell me if the restaurant Eraina is in Cambridge? Thank you. Sentence5: There are four trains that meet those criteria. The earliest leaves at 17:29 and arrives at 18:07. Trains are every 2 hours after that. Sentence6: The Address is Free School Lane City Centre, postal code cb23rh Sentence7: Actually I don't need any tickets today. I'm all set here. Thank you for your help. Sentence8: The booking was successful. Your table will be held for 15 minutes at 14:30 on Wednesday, and your reference number is K32GULPV . Sentence9: Thank you. I'll take it. Sentence10: Have a great day. Sentence11: The train ID is TR6673 and the price is 10.10 pounds per ticket Sentence12: How many tickets would you like me to book? Sentence13: Yes, it is in Cambridge. Sentence14: Okay great. I am also looking for a train leaving anytime after 17:15 going to Bishops Stortford on Thursday, can you book that for me please? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System