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: Please book a table for 8 people at 14:15 on Tuesday. Sentence2: I will book that for you now. Sentence3: no, i want one of those two restaurants. Sentence4: Both restaurants are cheap, if you are interested in a more expensive restaurant would you like me to check a different type of food? Sentence5: nandos is definitely going to be the cheapest. It's the south side and I can get you a reservation there if you want. Sentence6: Do you need help finding attractions or booking a taxi? I can assist you. Sentence7: You're welcome. Have a great day! Sentence8: Okay let's find one for you. I've got two in town. One's in the south and one is in the centre. Both are nandos locations. Sentence9: No that is it. Thank you. Sentence10: Booking was successful, the total fee is 140.8 GBP payable at the station . Reference number is : BMSH4XDW . Anything else? Sentence11: I can put you on the tr0627 it will get there a little early at 9:55, how many tickets would you like? Sentence12: Your reference number is : CE5BU114 . What else can I help you with? Sentence13: Yes, please set a reservation for me. Sentence14: i am leaving from norwich and going to cambridge. Sentence15: Where will you be departing? And where is your destination? Sentence16: I don't have a preference for location but it does need to be cheap. Sentence17: Ok thank you for your help and I need a reference number Sentence18: same group of 8 people. Sentence19: I need finding a Portuguese restaurant Sentence20: What day and time do you want to make the reservation? Also, how many people are in your party? Sentence21: That is all thanks. Sentence22: I also need a train for Tuesday that arrives by 10:45. Question: Who has spoken the sentence 15? (A) User (B) System
Output: 


Answer: (B) System