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: ok did you need an attraction ? Sentence2: i want to leave friday, after 10 Sentence3: I can help you out! What would you like to see? Sentence4: That is all, have a great day. Sentence5: Booking was successful, the total fee is 75.09 GBP payable at the station . Reference number is : UFTQBOZS . What else can I help you with today? Sentence6: Where will you be going? Sentence7: What day would you like to leave? Sentence8: Yes, could you please book that for me. I need one ticket. Sentence9: The Riverboat Georgina you may like. It has passenger cruises and more. Sentence10: Yes, please. I am looking for a boat type of attraction. Sentence11: No preference. Which one do you recommend? Sentence12: I am planning a trip in Cambridge Sentence13: Thank you, you too. Sentence14: The TR0044 meets your criteria. Would you like to book tickets? Sentence15: I will be going to cambridge. Sentence16: Well, I actually need a place to stay. Sentence17: Yes I have several in the center and one in the north and east. Any preferences? Sentence18: Thanks, I'm also looking for a train to cambridge departing birmingham new street. Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System