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. Is there anything else you need? Sentence2: My boyfriend really likes scottish food. Would you have anything that offers that? Sentence3: Thank you goodbye! Sentence4: I certainly can. We have 15 inexpensive restaurants in the center of town. Was there a particular type of cuisine you wanted? Sentence5: Yes please. Can you also give me the address, phone number, and postcode? Sentence6: That'll be all! Thank you! Sentence7: Hi can you help me find a cheap restaurant in the centre of town? Sentence8: I'll be happy to do that for you. What day would you like the table for? Sentence9: Oh wow. That's too bad. How about a good italian place? Sentence10: Actually, I've changed my mind. I'm going to wait on that reservation, thanks. Sentence11: Sure thing! The address is 47-53 Regent Street, the phone number is 01223365599, and the postcode is cb21ab. Is there anything else I can do for you? Sentence12: I do not have any Scottish places fitting that criteria, may I try another food? Sentence13: The zizzi cambridge is a cheap Italian restaurant in the centre area. Would you like me to make a reservation for you? Sentence14: I'd like a reservation at 6:30 for a party of 2. Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System