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: Yes, they can be reached at 01223902112. Is there anything else I can help you with? Sentence2: Thanks for contacting us enjoy your stay with us! Sentence3: Yes. There will be 6 of us dining. Sentence4: Camboats is a boat attraction in the east area of town. Would you like more information about them? Sentence5: Hello, do you know of any boat attractions in the East of town? Sentence6: Your booking was successful, here is your reference number JLI059GG . Sentence7: Monday, 14:15. Please include the reference number. Sentence8: There is one option here. It is pizza hut fen ditton. Would you like a table reserved? Sentence9: Thanks, that'll be it for me today. Bye! Sentence10: I don't have any information on their entrance fee, but their postcode is cb58sx. Sentence11: Yes, I'm also looking for a moderately priced italian restaurant preferably in the same area as camboats Sentence12: Yeah, can I get the entrance fee and postcode? Sentence13: What day and time do you want me to book it for? Sentence14: I can give Camboats a call. Do you have their phone number? Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User