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: The phone number for Camboats is 01223902112 and the address is The Plough, Green End, Fen Ditton. Can I help you with anything else? Sentence2: No, thank you. I have everything I need right now. Goodbye. Sentence3: I think there was a bad connection or a line crossed on that last sentence. I have the arrival time as 13:30, I just need the day. Sentence4: Okay, don't worry about it. Just please find me a train that arrives in cambridge by 13:30 Sentence5: I'm sorry. I don't have any information on the entrance fee. I'm not sure if they have one or not. Sentence6: Hello, a friend recommend I try out Camboats while I'm in town. Can you tell me more about it? Sentence7: TR5219 leaves from london kings cross at 05:17 arriving at Cambridge on Friday at 06:08. Would you like me to book a seat? Sentence8: Yes, please, and also the address. Sentence9: Yes, that would be fine. I'll need tickets for 7 people. Sentence10: I have a train on Thursday that arrives by 12:08. Will that do for you? Sentence11: you didn't even ask where i'm leaving. or what time. you're not very helpful "Help Desk" Sentence12: I will be traveling on Thursday. Sentence13: camboats is a boat in the east. Do you need a phone number? Sentence14: Done! The total is 165.20 Pounds, payable at the station. Your reference number is 1AGJWGQ4 . Can I help you with anything else? Sentence15: Can you tell me the entrance fee? Sentence16: I am glad to help you. Have a good day. Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System