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: 5 people for the train please. Sentence2: The fitzbillies restaurant is in the town center and it meets what you are looking for. Would you like for me to make you a reservation? Sentence3: Yes I am also looking for a restaurant in the centre of town in the expensive price range. Sentence4: Have a great trip! Sentence5: That's all, thank you. Sentence6: Perfect, can you book it for 5 people on the same day at 16:30? Sentence7: Are you certain you don't need further assistance? Sentence8: Great I have booked your tickets for 5 people leaving at 21:40 and arriving at 22:08. Is there anything else I can help you with? Sentence9: Can we try for 15:30? I also need the reference number for the train booking. Sentence10: There are several departures to Stansted Airport with one every hour beginning at 22:08. Would you like for me to look up a local restaurant for you? Sentence11: How many tickets shall I book for you on the 22:08 train on Friday from Cambridge to Stansted Airport? Sentence12: I need a train to stansted airport that leaves after 21:30. I am also going to be looking for local places to eat. Sentence13: Sorry, but they're all full at that time. Would you like to try a different time or perhaps another day? Sentence14: Your reference number for the train is KVNAC7LA . I was able to book Fitzbillies for you at 15:30. Your reference number for the restaurant is UN2K2CD8 . Is there anything else? Sentence15: I will take a seat on the 22:08 departure as long as it departs from Cambridge on Friday. Yes, please find a restaurant. Sentence16: Yes, I'm sure. Thanks. Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System