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: Okay your booking was a success and your reference number is L1ZY1OJE, is there anything else you need today? Sentence2: Just want to make sure, that reference number is for the train, TR5465? Sentence3: I do not have the postcode, phone number, and area for the train station. May I help you with anything else? Sentence4: postcode, phone number, and area Sentence5: Whale of a Time is the only attraction I see for that area. There is no entrance fee listed, but the phone is 01954781018. Sentence6: Yes, I would like to make a booking for 8 people. Sentence7: I would be happy to help you with that! We have colleges, museums, and entertainment attractions in that area. Which would you like to visit? Sentence8: Thank you for all your help. You have a great day. Sentence9: There are a number of trains leaving from Cambridge on Monday, is there a specific destination and time you'd like to leave? Sentence10: TR5465 arrives Leicester at 17:06. Would that work for you? And the postcode for Whale of a time is cb238el. Sentence11: I'm also looking for a train that departs from cambridge and leave on Monday. Sentence12: That is correct. It departs cambridge at 15:21 and arrices in leicester at 17:06 on Monday. Sentence13: I think I'd like to visit an entertainment attraction. Do they have entrance fees? Sentence14: I'd like to arrive at Leicester by 17:45. And what was that postcode for Whale of a Time again? Sentence15: You have a wonderful day yourself! Sentence16: Hi, I'm looking for places to visit. Mainly in the western part. Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User