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: Ok. I was able to book the table for three. Your reference number is 0FOAJA8A . Sentence2: Okay thank you. What time would you like to leave? Sentence3: ok, thank you and enjoy your stay! Sentence4: I'm travelling from norwich. Sentence5: I need to catch a train to get to the restaurant. Can you help with that too? Sentence6: There are 21 restaurants matching your criteria. Is there a type of cuisine that interests you? Sentence7: TR4387 arrives at 07:35, would that work for you? Sentence8: Let's go with Pizza Express, can you book for 3 at 13:30 on thursday please. Sentence9: You'll have to tell me where you are departing from? Sentence10: I need to arrive by 8:00. Sentence11: There are 2 choices, pizza express serves Italian food with a moderate price range, or pizza express Fen Ditton also in the moderate price range. Which shall I reserve? Sentence12: which day do you want to travel? Sentence13: Possibly Italian if that's available for 3 people on Thursday at 13:30. Sentence14: Booking was successful, the total fee is 52.8 GBP payable at the station .Reference number is : 5K7P12XZ . Sentence15: Please list all restaurants in Cambridge centre in the moderate price range. Sentence16: Thank you so much, If you can please leave a review for us. I hope your trip is amazing and very enjoyable. Sentence17: Yeah could I get three tickets please? Sentence18: I want to get there thursday please. Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User