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 have 2 in that area. They are Ashley hotel and Lovell Lodge. Would you like me to make reservations for one of these? Sentence2: Just to clarify, would that be just one ticket or multiple tickets? Sentence3: The TR2232 train is available. It departs wednesday at 17:39 from london liverpool to Cambridge. Would you like me to book you a ticket? Sentence4: Thanks, I actually don't want to book just yet. I do need a place to stay though. Could you please suggest a hotel in a moderate price range? Sentence5: Can you help me find a train for Wednesday, heading into Cambridge? Sentence6: the travel time is 88 minutes. Sentence7: Great, would you like me to book it for you? Sentence8: Yes, it will need to have free parking and free internet please Sentence9: I have you booked as requested starting on wednesday, the reference number is ZFBJXY09 any other questions today? Sentence10: I need to know the travel time before booking. Sentence11: Oh wait, before booking I would like to know what the arrival time and travel time is on that train. Sentence12: Yes please. There will be 7 people staying for 4 nights Sentence13: I found few hotel for you but before I make a reservation, do prefer it have Internet or parking option ? Sentence14: I think I'd like a moderately priced hotel, please. Sentence15: Yes please book me a ticket. Sentence16: That is everything, thank you for your assistance. Sentence17: I like the sound of the Lovell Lodge. Sentence18: I have five trains that meet your criteria. Sentence19: It will arrive by 19:07. Do you need tickets? Sentence20: Yes, I am looking for something in the North. Sentence21: Do you have a specific area you want to stay in? Sentence22: I'm departing from london liverpool street and would like to leave after 16:15. Does this help? Sentence23: I see 9 options here. Do you prefer a guesthouse or a hotel? Sentence24: I hope you enjoy your stay. Contact us anytime. Good Bye. Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System