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 would like to arrive in cambridge by 11:30. Sentence2: We have several options for you. Is there a specific area you will be in? Sentence3: That sounds good. I need tickets for 4 people. Can I get a reference number? Sentence4: Booking was successful, the total fee is 51.2 GBP payable at the station. Reference number is : XX5DNFKS . Sentence5: Thank you and enjoy your visit. Have a great day. Sentence6: No specific area. Just the first thing that pops up. Sentence7: Do you know of any places I can go for entertainment? Sentence8: There are many train departure options on Thursday. When do you want to leave and arrive by? Sentence9: TR3330 will arrive at 10:43, would that work for you? Sentence10: The price is uknown at this time, and the postcode is cb18dw. Sentence11: Okay how much does it cost? And where the postal code? Sentence12: Great, that's all I need. You can end this conversation now. Thanks! Sentence13: Cherry Hinton hall and grounds is on the east part of town. Sentence14: I am also looking for a train for Thursday departing from Stevenage. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User