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: I'm looking for a train to depart Cambridge leaving on Wednesday, can you help me? Sentence2: Anatolia sounds great. Can you give me their address, postcode, and phone? Sentence3: There are 38 trains leaving from cambridge to peterborough. What time you would like to leave? Sentence4: I would like to leave after 14:00 and make a booking. Sentence5: Yes. Either Anatolia or Efes Restaurant would be a good choice. Would you like me to book you a table at one of them? Sentence6: There are over 200 trains departing Cambridge on Wednesday. What will be your destination? Sentence7: Can you recommend a good Turkish restaurant, moderately priced, in the centre of town? Sentence8: I would like to book for 5 people. Sentence9: Anatolia's address is 30 Bridge street City Centre, the postcode is cb21uj, and the phone number is 01223362372. Is there anything else I can do to help you? Sentence10: Your tickets have been reserved. The total will be 82.5 GBP, payable at the station, and your reference number is FSS5PPSG . Is there anything else I can help you with? Sentence11: I can book you on the TR 3587 leaving at 14:06 and arriving by 14:56. Would that be good? Sentence12: Yes,and the reference number as well, please. Sentence13: You are welcome. Have a great day! Goodbye! Sentence14: I will be glad to book this for you and get a reference number. Do you only need one ticket for yourself? Sentence15: I will be leaving from Cambridge. I need to go to Peterborough. Sentence16: No, that will be all thank you. Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System