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: i'm sorry, someone entered the incorrect info. i can actually get you there by 10:08 on the TR2755 train. Sentence2: Can you help me find a train leaving by 10:30 going to stansted airport? Sentence3: If it is the only thing you have than I suppose I have no other choice, so yes. Can I get the reference number as well? Sentence4: Yes could you please book this train for me and send me the reference number. Sentence5: What day do you perfre to leave ? Sentence6: Sure! They are at Cambridge Leisure Park, Clifton Way, and their postcode is CB17DY. Can I help you with anything else? Sentence7: I only have a 10:40 on Saturday. Is that going to work for you? Sentence8: Cambridge Leisure Park, Clifton Way, and their postcode is CB17DY. Sentence9: Yes I am sorry this is the only option I have. Sentence10: Unfortunately there aren't any boating places in the south part of town? Would you like to try another area? Sentence11: I prefer to leave on Saturday from Cambridge. Sentence12: Yes, help find a place to go in the south part? Say, boating? Sentence13: I'm sorry. To which park are you referring? Sentence14: Thanks very much for your help today. Sentence15: There are two boat options in the centre, and one each in the north and east. What would your preference be? Sentence16: Tell me about other entertaiment in the south Sentence17: maybe the address to the park Sentence18: I have heard nice things about Tenpin. Can I please have their address? Sentence19: You are booked, the total fee is 8.08 GBP payable at the station .Reference number is : CPRIO59Y, can I help with anything else? Sentence20: This train would have you arriving at 11:08 and is 8.08 pounds per ticket. Would you like for me to book this for you? Sentence21: It will arrive by 10:40 or will leave then? I need to arrive by 10:30. Sentence22: I have two listings for entertainment, nusha and tenpin. Sentence23: Thank you for calling Cambridge TownInfo centre! It was a pleasure to serve you, I hope you have a wonderful visit! Sentence24: Sorry, I had a lot of background noise and didn't hear the address for Tenpin. Thank you for your understanding. Sentence25: Any area would be fine. Sentence26: Okay we will be late. I need tickets for 8 people. Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System