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: I think I would be interested in the 17:54 and I need to book it for 8 people. Sentence2: Okay TR2442 is booked for 8 people at 17:54 on saturday. It will cost 81.92 GBP in total, and your reference number is CCTYHUU8 . Sentence3: What is your departure site and destination? Sentence4: After 17:30 please Sentence5: The train should go to Cambridge and should depart from Stevens. Once you find the train you want to make a booking for 8 people. Sentence6: Just to clarify, you want to leave after 05:30 (am), or 17:30 (5:30 pm)? Sentence7: Have a good visit. Sentence8: Table for 8 at Gourmet Burger Kitchen, arriving at 20:30. They can hold your table for up to 15 minutes, only. Your Reference number is : ACOVVEZM . Sentence9: Thank you, that is all I needed. Sentence10: There are 4 trains that meet your specifications. They run every two hours. The first one leaves at 17:54 and the last at 23:54. What would you prefer? Sentence11: I need a train leaving on Saturday after 5:30 pm Sentence12: I'm also looking for a restaurant that serves north american food, in the expensive range. Sentence13: There is a train that leaves at 17:54. Sentence14: I am departing from stevenage and going to cambridge. Sentence15: gourmet burger kitchen is perfect for you. It is in the center and is in expensive price range. Could you like a reservation? Sentence16: Yes. That would be great. Make it for Saturday for 8 people at 20:30. Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User