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: Can I help you with anything else? Sentence2: Yes. Need it in the east. Star of 4 and do not care about parking, but do need it to be a hotel not guesthouse. Sentence3: I'd like to stay in the east. I'm looking for a 4 star hotel. I don't need any parking. Sentence4: Sorry, Im her husband, Ill take over the call, my wife is a little picky and confused. Please book the guesthouse, 4 people, 4 nights starting wednesday. Sentence5: Thank you for calling Cambridge TownInfo centre! It was a pleasure to help you, I hope you enjoy your time in Camridge! Sentence6: I'm sorry, after taking a second look, the Autumn House is not located in the east area. Would A&B Guest House be okay? It's also 4-star. Sentence7: I'm afraid that I don't have that information. Can I help you with anything else? Sentence8: There aren't any 4 star hotels available in the east. Sentence9: If that information is not available, then that's all I need today. Sentence10: i need a place to stay Sentence11: Between Victoria Road and The River, cb43px. Would you like to know more about the place? Sentence12: Do you have any places that are hotels, not guest houses? Sentence13: Okay that booking was successful and your reference number is SYX1AD7L . Sentence14: Okay, I recommend the Autumn House. It is a guest house in the cheap price range. Would you like me to book a reservation? Sentence15: No, thank you. Sentence16: I am sorry but there are no 4 star hotels in the east. Is there another area you would like to look at or possibly reserve the guesthouse? Sentence17: Great! I was also interested in finding a swimming pool in the north. Sentence18: I guess I'll book the guesthouse for 4 people, 4 nights starting wednesday. Sentence19: Sure, do you have an area of town you want to stay in? Sentence20: I need their entrance fee please Sentence21: I'm afraid I don't have that information available. Can I help you with anything else? Sentence22: Sure, Jesus Green Outdoor Pool is a nice one. It is located between Victoria Road and the River. Sentence23: Yes, can I have the address and postcode, please? Sentence24: What is the entrance fee? Question: Who has spoken the sentence 23? (A) User (B) System
Output: 


Answer: (B) System