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 would like to stay at the El Shaddai. I would like to book it for 1 person for 4 nights starting on Wednesday. Sentence2: I'm looking for a train that will be leaving on Sunday going to Peterborough. Sentence3: There are 38 trains, what time would you like to depart or arrive? Sentence4: Indeed it is! I just booked you for two nights, ref num: IC0RATQI . Do you need anything else today? Sentence5: Your trainID TR9733 has been booked to leave at 12:34. Than you. Sentence6: That's all. Thank you very much. Sentence7: We are happy to help. Thank you for using our service. Have a wonderful day! Sentence8: I also need a room in Peterborough. Sentence9: Unfortunately I was not able to book the hotel for then. Would you like to book another day or consider shortening your stay? Sentence10: There are 32 trains travelling to peterborough on Sunday departing from cambridge. The closest arrival time is 21:24, would you like to book a seat? Sentence11: There are many results for hotels and guesthouses, could you be more specific on what price range you are looking for and what part of town? Sentence12: Yes, for 1 person please, and give me the reference number. Sentence13: Is it possible to book this reservation for 2 nights? Sentence14: I need to get there by 21:30. Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System