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: Booking was successful. Reference number is : BV84E4XA . What else can I assist you with? Sentence2: The only option we have is the TR6595 which leaves at 19:00. Does thatwork for you? Sentence3: El Shaddai gets zero stars and so does the City Centre North B and B. Sentence4: I'd be happy to help. What is your destination? Sentence5: Your reference number is STVHW0DA . Sentence6: I am also looking for a cheap place to stay that has wifi. Sentence7: Have a wonderful day. If there is anything else just let me know. Sentence8: Can you locate a Starbucks Coffee near the train station in London King's Cross? Sentence9: It appears they about the same price. Sentence10: Which one of those is the cheapest? Sentence11: I'd like to get to London King's Cross on Thursday. Sentence12: That is all I need today. Thank you for your help. Sentence13: Ok. There are 10 cheap places with wifi. Were you looking for a certain part of town? Sentence14: Yes, please book it for 5 people. Sentence15: i need a train out of cambridge after 17:30 Sentence16: It doesn't matter, but I want it to be zero stars. Sentence17: Ok please book El Shaddai for 5 people and 4 nights starting sunday Sentence18: There is one 3 blocks from the station,is there anything else ? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System