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: There are 3 results for expensive british food in the centre area. The first is fitzbillies restaurant, would you like more information on it? Sentence2: I am looking for a train departing from Cambridge that would arrive by 19:45. Sentence3: Booking was successful, the total fee is 7.04 GBP payable at the station. Reference number is : 9YZO84HU . Can I help you with anything else? Sentence4: Unfortunately that is booked already. Would you like to book a different time? Sentence5: Certainly! I was able to book you for 2 people at Fitzbillies Restaurant at 13:15 on Sunday. Your Reference number is YHP8JIIA . Sentence6: That one sounds good, could you reserve me a table for 2 at 14:15? Sentence7: I am also looking for a very expensive restaurant located in the Centre. Do you have any suggestions? Sentence8: Thanks so much - that's all I need today. You've been a great help! Sentence9: Just to make sure I have this correct. Which day would you like the reservation booked for? Sentence10: The same day as the train, on sunday. Can I also get the reference number please? Sentence11: There are 33 expensive restaurants in the centre. Is there a particular kind of cuisine you're looking for? Sentence12: Train TR5389 leaves Cambridge at 17:50 and arrives in sly at 18:07. Can I book this for you? Sentence13: Thank you as well. Have a wonderful day. Sentence14: There are 1,029 trains that meet your needs. Would you like to narrow it down by destination, day, and/or the time it leaves? Sentence15: Yes, I'd prefer British food. Sentence16: Yes, I need a train that goes to Ely and leaves on Sunday. Sentence17: Can you try booking for 2 on Sunday at 13:15 instead? Sentence18: That works, can you book 2 seats for me please? Question: Who has spoken the sentence 16? (A) User (B) System
Output: 


Answer: (A) User