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: Booking was successful. Reference number is : 40GGN5EY . Is there anything else I can assist you with? Sentence2: sure, its moderate, phone is 01223500005 and the postcode is cb11ln, anything else? Sentence3: On wednesday please Sentence4: can you book me at Ashley Hotel for 1 and 3 nights ? Sentence5: Thank you, that'll be all today. Sentence6: There are two hotels that match what you're looking for. The Ashley Hotel and Lovell Lodge. Does either of those sound preferable? Sentence7: Yes, I'm also looking for some information on a restaurant called Efes. I'll need the phone number, price range, and postcode, please? Sentence8: I am looking for a moderately priced hotel in Cambridge. Sentence9: I have three choices for you. Do you have an area that is more convenient for you? Sentence10: No problem! What day are you wanting to check in? Sentence11: Yes, can you check the north please? Sentence12: If the hotel and restaurant are all you need for today, then thank you for contacting Cambridge TownInfo centre. Goodbye. Sentence13: Yes that's what I already asked you to do. Sentence14: Would you like me to book it for you? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System