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: There are 11 results but the first listing is a and b guest house located at 124 tenison road. Sentence2: I want a particular one called whale of a time, can you find that? Sentence3: Yes! Would you like their information? Sentence4: I will also need a taxi to commute please. Sentence5: Which side of town are you interested in staying? Sentence6: To clarify, you'd like a taxi from Whale of a Time to A and B Guest House, correct? What time would you like the taxi? Sentence7: There are several However I need to know how long your stay is going to be when and for how many please? Sentence8: From A and B Guest House at 01:00 to Whale of a Time, please. Sentence9: Sure, lookout for a black Tesla contact number 07230031614. Can I help you with anything else? Sentence10: Sorry, I didn't understand your last request. I understand that you're looking for a 3 star hotel with internet. Is there a certain area you are interested in staying? Sentence11: i suggest whale of time. i need its address, entrance fee and postcode Sentence12: Whale of a Time is located at Unit 8, Viking Way, Bar Hill. Their postcode is cb238el. Their entrance fee is not listed. Sentence13: Can you help me book a three star hotel with internet? Sentence14: I am also interested in finding a 4 star guesthouse type hotel in the moderate price range with free wifi. Sentence15: Yes please, could i get their address, postcode and entrance fee if they have one? Sentence16: You're welcome! Have a great day! Sentence17: No, that's everything I need today. Thank you. Sentence18: I am not booking a room yet I just need information. Please make a suggestion and provide the address. Question: Who has spoken the sentence 15? (A) User (B) System
Output: 


Answer: (B) System