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: TR5331 leaves Kings Lynn at 15:11 on Friday and arrives in Cambridge at 15:58. Will this train work for you? Sentence2: Yes, I need a train departing from kings lynn. Sentence3: There are several listings. Do you have a food preference? Sentence4: Okay, have a wonderful visit in cambridge! Sentence5: I'm leaving from kings lynn on sunday after 14:30 and arrive at cambridge. Sentence6: No. The train should leave on Sunday as I said. Sentence7: What time will you be departing and where will you be departing from? Sentence8: I have booked your seats,here is the information:Booking was successful, the total fee is 54.88 GBP payable at the station . Reference number is : 5C3SFLV2 . Sentence9: Booking was successful. The table will be reserved for 15 minutes. Reference number is : 9ATX95AG . Sentence10: No. Could you pick something you like for me? Sentence11: Yes please. I need 7 seats. Sentence12: I also need a cheap place to eat in the center of town. Sentence13: That is perfect. That is all I need today. Sentence14: Can you get me a table for 7? My group will probably head there at 17:00 on the same day. Sentence15: I would recommend the river bar steakhouse and grill, a modern european joint at Quayside Off Bridge Street. Would you like to make a reservation? Sentence16: I have the TR2965 leaving kings lynn sunday at 15:11. Would you like me to book that for you? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System