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: Yes, I'd like to leave Thursday, what are the departure times and travel times? Sentence2: That's not necessary. I need a place to stay too. Sentence3: No thank you that was all I needed. Good bye. Sentence4: Thank you and enjoy your stay. Sentence5: The first leaves at 05:29 and the last pulls out at 13:29. How many tickets please? Sentence6: Would it be possible to book it for eight people for four nights? Sentence7: Okay, do you know what sort of place you want or where located? Sentence8: When will you be departing and where will you be departing from? Sentence9: Sounds great. Can I get more information on finches bed and breakfast please? Sentence10: There 35 trains to choose from, do you have a preference on a date and departure time? Sentence11: On Sunday, please. Sentence12: I need to leave from Cambridge and arrive by 14:30 in Bishops Stortford. Sentence13: I need to find a train to bishops stortford please. Sentence14: I need a hotel in the west , free parking is not necessary but it should be rated 4 stars. Sentence15: Okay, when would you like to begin your stay? Sentence16: How about finches bed and breakfast? They are in the west and have an excellent 4 stars. Free internet and parking! Sentence17: Booking was successful. Reference number is : JFMQZLIX . Is there something else I can assist you with? Sentence18: Finches address is 144 thornton road, postcode cb30nd. May I book it for you? Question: Who has spoken the sentence 16? (A) User (B) System
Output: 


Answer: (A) User