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: Your reservation for a table of 3 at sitar tandoori this sunday at 12:15 was successful. The table will be reserved for 15 minutes. Your Reference number is : 99050JJK . Sentence2: Hello, I'd like some information on a train departing from Cambridge on sunday that leaves after 18:15. Sentence3: I'm trying to get to london kings cross. Sentence4: I have several expensive restaurants available. What type of food would you like? Sentence5: Your booking was successful, the total fee is 56.64 GBP payable at the station . Reference number is : T7JV2Z8H . Is there anything else I can help you with today? Sentence6: Yes, please reserve 3 seats for us on that train, thanks. Sentence7: Yes, I would like the east area please. Sentence8: What time are you looking to arrive? Sentence9: I don't have an arrival preference but I want to leave after 18:15. Sentence10: Yes go ahead an book it. Could I get the reference number please? Sentence11: I would like Indian food please. Sentence12: There will be three of us dining on Sunday at 12:15. Sentence13: You're very welcome! Have a great time! Bye! Sentence14: There are 59 trains leaving Cambridge on Sunday after 18:15. What is your destination? Sentence15: I have train TR9039 leaving at 19:00 and arriving at 19:51. Would you like to book that? Sentence16: There are 2 Indian restaurants in that area. I would recommend the sitar tandoori. Would you like me to book a table for you? Sentence17: I would like to dine at an expensive restaurant. Sentence18: Thank you for your help. thats all i need today. Sentence19: When would you like to dine, and how many will be in your party? Sentence20: Is there a certain area of town you would prefer to dine at? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User