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: There are several options meeting your criteria. What time would you prefer to depart? Sentence2: I am looking for information on the Scott Polar Museum. Sentence3: My pleasure, thank you for using Cambridge TownInfo centre. Sentence4: Have a great day. Sentence5: Where will you be departing from and do you have a particular day you wish to leave? Sentence6: No that is all. Thank you very much. Sentence7: Scott Polar Museum is in the centre. Phone number is 01223336540. Postcode is cb21er, address is lensfield road and entrance fee is free. Anything else I can help you with today? Sentence8: That will be all for now.Thank you very much Sentence9: TR0033 is the latest train that meets your requirements and leaves norwich at 15:16. If you want to catch an earlier train, they depart hourly. Anything else I can do? Sentence10: Thank you for your help! Sentence11: I want to depart Wednesday from Norwich Sentence12: It doesn't matter. I just need the travel time, departure time, and train ID. Sentence13: You are very welcome. Thank you for using the Cambridge Towninfo Centre! We appreciate your business, have a great a day. Sentence14: Sorry, I had another concern. I'm looking for a train that goes to Cambridge and arrives by 17:15 Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System