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: Can you book me a table please? Sentence2: Where would you recommend? Sentence3: Have a wonderful day. Sentence4: My pleasure, there is something for everyone, we have over 40 attractions in that area? What kind of activity do you have in mind? Sentence5: I would recommend Cambridge University Botanic Gardens, located on Bateman Street, Postcode cb21jf. It does cost 4 pounds to enter. Phone is 01223336265. Sentence6: Sounds good, thanks! I'm also looking for information about a restaurant called Eraina. Sentence7: I don't have any info on shopping sites but I do have info on museums, architecture, cinema and the like. Sentence8: Book it for 14:30 on Wednesday for 5 people Sentence9: Your booking was successful. Your reference number is INFN2J8M . Is there anything else I can do for you today? Sentence10: Can you help me find a place to go in the centre? Sentence11: Shopping and maybe a mini mall and I need address, postcode, and attraction type Sentence12: Thank you that is all I need. Sentence13: Yes Eraina serves European food and is located in the center and is expensive. Sentence14: I can assist you with that. How many guests are in your party and what date and time would you prefer? Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User