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: Thank you and have a wonderful day! Sentence2: Can you please give me your departure and destination? Sentence3: I am also looking for a train that should arrive by 15:15 and one that needs to leave on Tuesday. Sentence4: No. Why don't you pick one at random for me and give me the address and postcode. Sentence5: Stevenage is my departure, my destination is Cambridge. Sentence6: Thank you. Your service was pleasant. Sentence7: I'd like to visit a museum in the center of town. Sentence8: There are 11 museums in the town centre area, all with free admission. Are you looking for a particular type of museum? Sentence9: There is one train departing from Cambridge and arriving in Stevenage at 14:43. All other trains arrive earlier or later. Would you like me to book this for you? Sentence10: Cambridge Contemporary Art Museum address 6 trinity street postcode cb21su Sentence11: Booking was successful, the total fee is 51.2 GBP payable at the station . Reference number is : UJAL7AEJ. Sentence12: That would be fine please book it for four people Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System