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: Thank you for your help. Sentence2: Perfect thats all I needed thanks Sentence3: I have da vinci pizzeria. It is in the cheap price range. Would you like a booking? Sentence4: You're very welcome! Bye! Sentence5: Find me an italian place in the north Sentence6: Is there anything else you need today? Sentence7: I am all set, thanks. Sentence8: Okay, I have booked 3 tickets for TR2950. The reference number is RCS04ITK and the total fee will be 113.4 GBP. Sentence9: Sure, can you book this for 3 people. I'll need a reference number please. Sentence10: You're welcome. Let us know if there is anything else you need. Sentence11: Certainly, where would you like to depart from, and what is your destination? Sentence12: TR2950 arrives at 08:06. Do you need a ticket? Sentence13: im also looking for a train that arrives by 08:15 and leaves on tuesday Sentence14: I will depart from Cambridge and arrive in Leicester. Sentence15: Yes. Can you book a table for 3 at 16:00 hours on saturday? Sentence16: Done. Your reference number is 7LJ1OE8L . Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System