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: Okay. No problem I have you booked into a red Lexus and their contact number will be 07211078651. Sentence2: No, I don't mind paying admission. Sentence3: do you want to book for one day? Sentence4: Which day do you prefer? Sentence5: Thank you, goodbye Sentence6: Do you happen to have any guesthouses in that area? Sentence7: I have no preference. Sentence8: I'd like to leave the church by 12:00, please. Sentence9: When do you want to leave or arrive by? Sentence10: The cityroomz hotel is located in the centre and has free wifi. Would you like to make a reservation? Sentence11: There are many options, including a boat, college, architechture, and theatre. Sentence12: OKay then I would suggest great saint mary's church Sentence13: of how many stars do you prefer? Sentence14: Yes please. I need the reservation to be for 5 people. Sentence15: Booking was successful. Reference number is : G1KVK1RL Sentence16: What is in the centre? Sentence17: Sound good. Can I get their address, phone number and entrance fee please? Sentence18: I would prefer Saturday please. Sentence19: Saturday or tuesday. Sentence20: I can do that for you. What day do you want to book the hotel for? Sentence21: I want five nights. Sentence22: Sure! The address is Market Square. Phone number is 01223350914 and it costs 2 pounds to get in. Sentence23: I don't. Would you like to try a different location or price? Sentence24: If there is nothing under entertainment, do you have a museum you can recommend? Sentence25: Thank you for using our service today. Sentence26: The Avalon is a guesthouse in the north, in the moderate price range, with free wifi. Do you want me to book it? I will need your details. Sentence27: Thanks. I also need help with lodging in the moderate price range with free wifi, please. Sentence28: Do you have a price preference? Sentence29: Yes please find me a guesthouse in the north, in the moderate price range that includes free wifi. Sentence30: Thanks. I will also need a taxi from great saint mary's church to the Avalon guesthouse. Sentence31: What is there to do or see for entertainment? Sentence32: There are still 44 entries including options like architecture, theatre, museums, concerthall, etc. Do you think you can narrow down your options a bit? Question: Who has spoken the sentence 30? (A) User (B) System
Output: 


Answer: (A) User