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: TR5694 cambridge broxbourne friday 16:01 17:01 17.90 pounds 60 minutes Sentence2: Booking was successful, the total fee is 14.32 GBP payable at the station . Reference number is : EWSOVUHU . Sentence3: Is there any that are closer to leaving at 15:15? Sentence4: Yes, I am leaving from Cambrige. How long is the travel time? Sentence5: Please confirm you are leaving from Cambridge. If yes, TR6870 leaving 16:01, hourly, is the closest time. 15:01 is too early. Sentence6: I am trying to find a train leaving after 15:15 to go to broxbourne. Sentence7: Thank you, good bye Sentence8: Okay. Thank you for all of your help. Have a good day now. Sentence9: Could you please tell me the train ID, arrival time, and travel time? Sentence10: Which day were you planning to travel to Broxbourne? Sentence11: I need all three things please, train id, arrival time and travel time. Sentence12: The travel time is 60 minutes. Sentence13: I am looking at traveling on Sunday. Sentence14: Read the previous lines please! number TR6870, arrival 17:01, travel time 60 minutes. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User