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 so much! Sentence2: I have two trains that will get you in by 9:45. What is the earliest you want to leave? Sentence3: Do you have any location in mind? Sentence4: Any location is fine, Ill go with whatever you recommend, please book me for 7 people on monday at 11:00 Sentence5: Departing from Cambridge and going to London Liverpool Street. Leaving Wednesday and want to arrive by 09:45. Sentence6: TR2835 will arrive by 09:27 how many tickets do you need for the train? Sentence7: A table has been booked for you at graffiti. Sentence8: You're welcome. Do you need anything else today? Sentence9: Nope, that'll be all for today. Thanks! Sentence10: Thank you for calling and have a great trip! Goodbye. Sentence11: Where are you travelling to and at what time? Sentence12: Oh, it's the same group of people from the restaurant. Can I get the reference number? Sentence13: I'm looking for a posh British restaurant to take my bird to, know of one? Sentence14: May I have the reference number? Sentence15: I would like the train that gets me there close to 9:45. Sentence16: The reference number is ABNPDU1B Sentence17: Booking was successful, the total fee is 116.2 GBP payable at the station . Reference number is : XZCDEB01 . Sentence18: I also need a train leaving on wednesday. Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User