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 1 person on the TR7928 train was successful. Your Reference number is : KI1ILFP7 . Is there anything else I can help you with today? Sentence2: I can. The phone number is 01223355397. The postcode is cb23nz. Would you like more information? Sentence3: thanks too and goodbye Sentence4: That is the arrival time and total travel time for TR7928. Sentence5: it arrives at 12:07 and only a 38 minute ride Sentence6: What attractions can you recommend in the centre? Sentence7: The first train out after 09:30 is TR7928, leaving at 11:29. Sentence8: I need some quick information on trains from cambridge to bishops stortford. What can you tell me? Sentence9: That will work perfect can you book that for me please? Sentence10: No, that is all. Thank you. Sentence11: enjoy your stay Sentence12: Just myself. Please book me that train please. Sentence13: How many people will be travelling? Sentence14: We have lovely architecture. All saints church and holy trinity are quite nice Sentence15: thank you and welcome to Cambridge Sentence16: I love architecture. Can you please provide the phone number and postcode for Holy Trinity? Sentence17: I will need to go on Monday but I can't leave until after 09:30. Sentence18: Trains go from Cambridge to Bishops Stortford every 2 hours at 29 past the hour. What day will you be traveling, and at what time of day? Question: Who has spoken the sentence 16? (A) User (B) System
Output: 


Answer: (A) User