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 booked you a Taxi. the contact # is: Contact number: 07076540763. Is there anything else i can do for you? Sentence2: I found Sitar Tandoori for you. It is located in east part of town. It is in the expensive price range and serves Indian food. Sentence3: That was all I needed. Thanks for all your help. Sentence4: Great! There are 13 places to stay in the north. Eleven of them are guesthouses and 2 are hotels. Do you have a preference? Sentence5: The Ashley Hotel at 74 Chesterton Road is nice. Can I book a room for you? Sentence6: I would like to find a hotel, preferable one that is moderately priced. Sentence7: What is the car type? Sentence8: You're welcome. Have a great trip. Sentence9: Please feel free to contact us with any other questions you have! Have a great day! Sentence10: What's their postcode? Sentence11: I'm sorry that I forgot to mention it! It will be a yellow audi. How else can I help today? Sentence12: Can I possibly get their phone number? Sentence13: The postcode is cb41er. Do you need anything else today? Sentence14: I am looking for a restaurant a friend recommended. It is called the sitar tandoori. Sentence15: I'm looking for a place to stay in the north. Sentence16: There phone number is 01223350059. Do you require any more assistance? Sentence17: Thank you kind person for helping me! Sentence18: Thanks for the info, can you also get me a taxi from the hotel to the restaurant? I need the taxi to be there by 04:15. Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System