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: Ok, hope you have a wonderful time. Thank you, goodbye. Sentence2: Booking was successful. Reference number is : WYO54VCI . anything else? Sentence3: I would also like to book at a guest house named Aylesbray Lodge, starting Monday. Sentence4: Happy to assist. Sentence5: I'm starting to book your reservation at Aylesbray Lodge starting on Monday, how many days will you be staying? Sentence6: I will be staying for 3 nights. Sentence7: No that will be all. Thank you! Sentence8: That sounds good, I like that. Could you tell me what the postcode is please? Sentence9: Hi, can you help me with some trip planning? I could use some suggestions for places to go in town. Sentence10: I'm looking for a theatre in any part of the city. Can you recommend one? Sentence11: the postcode is cb11pt Sentence12: There is the Mumford theatre, it is located at Anglia Ruskin Enterprise, East Road in the Centre area. Sentence13: I'm grateful for your services. Sentence14: OK, and how many people will be staying in the room? Sentence15: I can definitely help you with that. Is there a specific type of attraction you are interested in or section of the city you were looking at? Sentence16: 2 people, is that fails then try 1 night. Please provide the reference number. Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System