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: They is no phone information given, can I help with anything else? Sentence2: Okay, I recommend cambridge artworks. For the taxi, I will need more information on either departure or arrival time Sentence3: There are lots of attractions in the east! Do you have a preference for type? Sentence4: OK, and what time would you like that taxi? Sentence5: Glad I could help. Enjoy your trip! Sentence6: Yes I still need a taxi please. Sentence7: Can I get the phone also please? Sentence8: How about the Ugly Duckling that is located in the city center? Sentence9: And can you give me the postcode? Sentence10: I don't have a preference on the area. Can you make a suggestion? Sentence11: Certainly, the postcode is cb13ef. Are you still wanting to reserve a taxi? Sentence12: the address is 5 greens road. Sentence13: Hello, I'm looking for a restaurant in Cambridge that serves high Chinese food and is more expensive than it's competitors. Sentence14: I have some here can I get what area you would like to eat in? Sentence15: You are booked for Weds at the ugly duckling refs number is U1BCCKQX Sentence16: A red honda will be picking you up in time for your reservation, the contact number is 07278810684, anything else today? Sentence17: That takes care of my needs. Thank you, bye! Sentence18: I will like a place with no entrance fee and also a taxi that will take me from the restaurant to the place. Sentence19: well to commute between places. Sentence20: That sounds fine, can you book a table for 3 at 11:45 on Wednesday please? Sentence21: Yes, i am looking for places to visit on the east side of town. Sentence22: What is cambridge artworks address? Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System