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: Do you have any 3 star hotels available? Sentence2: There are no matches, would you like to check other locations? Sentence3: The soul tree nightclub is quite lively. Their postcode is cb23qf and their phone number is 01223477900. Sentence4: Thanks for recommending the Guest House. I am also looking for some town nightlife, especially a nightclub. Sentence5: I have no preference. Can you suggest one and give me their postcode and phone number? Sentence6: There are no 3 star hotels in the north with a moderate price? Sentence7: There are two hotels available; the Ashley Hotel and the Lovell Lodge. Both offer internet and parking and are 2 star hotels. Do you have a preference? Sentence8: Unfortunately, no. I do happen to have 2 guesthouses though. Both are moderate pricing and 3 stars. Are you interested in one of those? Sentence9: We have 6 nightclubs in town. Would you prefer to visit the centre or the south? Sentence10: Yes, please. Can I get a room for 4 people? We'll arrive on Wednesday and stay 5 nights. Sentence11: Hello, can you recommend a moderately-priced hotel in the North part of town, please? Sentence12: Done! You have a reservation at the Alpha-Milton Guest House. Your reference number is 9SA494XR . Can I help you with anything else? Sentence13: Thank you for using Cambridge TownInfo centre. Have a great day! Sentence14: Great, thank you! That's all for today! Bye bye! Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System