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: You are welcome. Thank you for TownInfo centre for your traveling needs. Goodbye. Sentence2: As long as it arrives by 8:30 that sounds good. I'll need 7 seats please. Sentence3: I am leaving from cambridge going to broxbourne and want to arrive by 8:30. Sentence4: Would you like to depart from London Kings Cross or London Liverpool Street? Sentence5: I'd like to leave from London and travel to Cambridge on Saturday around 15:00 Sentence6: I'd be happy to help. Are you departing from a specific station, or do you have a specific destination in mind? Sentence7: Hello. I need help planning a train trip. Sentence8: Please state your departure location and your destination. Also, is 15:00 the time you want to leave or to arrive? Sentence9: It does and I have booked 7 seats for you. Anything else? Sentence10: That is all, thank you. Sentence11: I would like to depart from Cambridge. Sentence12: Sure, the reference number is VATL0RJL . Is there anything else I can help you with? Sentence13: How about TR8674? It leaves at 05:01. Sentence14: Reference number please? Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System