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: Yes please. What's its entrance fee, contact number, and postcode? Sentence2: I just want something to do in the centre of town, can you tell me what sort of places there are? Sentence3: Thanks for your help. Sentence4: Not especially, just kicking around the town centre for a few hours and looking for something to do. Sentence5: Sure. There is architecture, boating, the cinema, colleges, a concerthall, museums, nightclubs, parks, a swimmingpool and theatres. Sentence6: Give us a call should you need anything . Sentence7: Club Salsa has an entrance fee of 5 pounds. Their postcode is cb12jb, and their phone number is 07782218745. Is there anything else I can help you with? Sentence8: Are you sure? We have so many different places to go - I'd love to get some more input from you. Sentence9: there are plenty, anything in particular you are looking for? Sentence10: Are there any places to go in the town centre? Sentence11: No that is it, adios. Sentence12: Can you recommend a nightclub? Sentence13: Have a great day, good bye. Sentence14: Club salsa is a nightclub in centre. Would you like their contact information? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System