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: Okay, we've got christ's college on saint andrew's street at 01223334900. Will there be anything else? Sentence2: While in Cambridge I am looking for a college in the centre of town please. Sentence3: No, that will be all. Thank you! Sentence4: Yes. I would like the train to depart from Cambridge and arrive by 18:15. Sentence5: I'm sorry, but I don't understand. Can you please restate your request? Sentence6: You're quite welcome! We hope you've found this service useful and wish you a wonderful rest of your day. Sentence7: Yes, I need a train from cambridge to bishops stortford on Tuesday. I need to arrive by 18:15. Sentence8: Yes, I can help you with that. The first train leaves at 05:00 on Friday and the last one departs at 13:00, do you have a preference? Sentence9: No I don't have a preference. Sentence10: saint andrew street Sentence11: Thank you. TR2153 will depart cambridge at 17:29 on tuesday, arriving at bishops stortford at 18:07. Will that work? Sentence12: There are 13 colleges in the centre of town, did you have a particular one you were interested in? Sentence13: I am also looking for a train that departs from cambridge. I'd like it to arrive by 18:15. Sentence14: What would your destination be? Sentence15: Can I get tickets for 5 people? Sentence16: Sure. Your reference number is KOPBB0EL . Anything else I can do for you today? Sentence17: That should work thank you very much Sentence18: How many tickets do you need? Question: Who has spoken the sentence 16? (A) User (B) System
Output: 


Answer: (A) User