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: What is the price and travel time? Sentence2: There is a train leaving at 13:29 and arriving at 14:07. Would you like me to book that for you? Sentence3: I am also looking for a train. The train should depart from bishops stortford and should go to cambridge. Sentence4: We have three choices, any other preferences? Sentence5: Yes. The hotel should be 4 stars and located in the west with free parking please. Sentence6: There are 2 hotels available, The Huntingdon Marriott and the Cambridge Belfry. Do you want an expensive hotel or a cheap hotel? Sentence7: What time would you like to arrive in Cambridge? Sentence8: I will need the day you want to arrive. Sentence9: I would like it starting Thursday for 8 people for 5 nights. Sentence10: The price is 10.10 pounds, and the travel time is 38 minutes. Sentence11: On what day will you be travelling? Sentence12: Have a safe trip. Sentence13: Can I look up anything else for you? Sentence14: How many nights and for how many people? Sentence15: Hello, can you help me with my plans as far as finding a place to stay? Sentence16: I will be traveling on Thursday. Sentence17: Of course, do you need anything specific? Sentence18: Okay. Your booking at the Cambridge Belfry was successful. The reference number is LJOEY6H2 . Can I help you with anything else today? Sentence19: Arrival time isn't the issue, but I have morning meeting so I can't leave bishops stortford until after 12:15 . Sentence20: As long as it is a hotel, I would like to book it. Sentence21: I'm sorry I actually need it for Thursday, sorry. Any price range is fine. Sentence22: I will need to be there on wednesday. Sentence23: That was all I needed. Sentence24: Ok! Have a great day! Sentence25: Thank you so much. I think that's all I need now. Sentence26: Thank you for your help. Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System