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 the help, have a nice day. Sentence2: Hi, kohinoor is a cheap Indian restaurant, but doesn't specify that it is South Indian. Would you like the phone number? Sentence3: There are 8 trains that will arrive by 21:45. What time would you like to depart? Sentence4: how about 17:00. Sentence5: Great! I am also looking for a train that leaves on thursday and departs from cambridge. Sentence6: Hi, I'm looking for a place to eat, preferably a cheap South Indian restaurant. Sentence7: How many tickets do you need? Sentence8: Yes, that would be great. Could I get a reference number please? Sentence9: Is it in the centre of the city? Sentence10: Would you like for me to book a table at Kohinoor for you? Sentence11: What's the last train to arrive by 21:45? Sentence12: Yes, it is indeed in the centre. The phone number is 01223323639 Sentence13: Destination is Stevenage. I would like to arrive by 21:45. Can you book the train for me as well? Sentence14: It would be the one leaving at 19:21 and arriving at 20:10. Shall I book it? Sentence15: I need 1 ticket. Sentence16: Booking was successful, the total fee is 12.8 GBP payable at the station . Reference number is : 5TM8STAM . Sentence17: What is your destination? Sentence18: Yes, please. 18:00 on Wednesday for just myself. Sentence19: I'm sorry, they're all booked up at that time. Would you like to try a different time? Sentence20: It was a pleasure to serve you have a great day Sentence21: I was able to book that, your reference number is HEJFVRPP . Sentence22: Ok, thank you. Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System