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: Can you get me there a little bit earlier? Sentence2: Sure, Can I have a reference Number? Sentence3: Which of those have free wifi? Sentence4: Actually, I change my mind. I will take care of the booking later. Thanks for your help. Goodbye. Sentence5: I need some more information first. What day will you be checking in on, and how many days will you be staying for? And how many people? Sentence6: Okay, I have you booked for train TR5910. The total fee is 80.8 GDP. Is there anything more I can do for you? Sentence7: There will be 8 of us. Sentence8: There are 5 different options that fit that criteria, 2 in the east, 2 in the north, and one in the city centre. Would you like to hear more about these? Sentence9: I also need a guesthouse for 8 and needs to be a 4 star Sentence10: How about 05:24 that is the earliest, how many tickets please? Sentence11: How about Allenbell? Sentence12: Thank you contacting us, it was a pleasure to help. If you need any assistance feel free to contact us again, goodbye. Sentence13: There are actually 18 different options to choose from. Is there a certain part of the city you'd like to stay in, or a particular price point? Sentence14: i need a train from stansted airport to cambridge Sentence15: I need to get there by 20:30 on Wednesday. Sentence16: You could grab the TR3828 leaving stansted airport it will get you there by 09:52. Sentence17: Any price point is fine as long as it is 4 star and has free parking. Sentence18: What day and approximately what time will you be traveling to Cambridge? Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System