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: The amount of tickets today is not important I just want to make sure that I leave on Saturday and if I could get an arrival time please Sentence2: The postcode is cb21jf. Is there anything else I can help you with today? Sentence3: Yes, two tickets please. Sentence4: Train TR5413 arrives at 24:44 OR 00:04 on Sunday. Would you like to book it now? Sentence5: Your booking has been successful! The total fee is 120.16 GBP and the reference number is OYUCGOSD . Do you need help with anything else? Sentence6: TR5413 leaves Cambridge at 22:01 and costs 60.08 pounds. How many tickets do you need? Sentence7: What about park attractions? Sentence8: I found the Cambridge University Botanic Gardens on Bateman Street. Sentence9: OK. Can I have the postcode? Sentence10: I'm looking for entertainment attractions in the centre of town. Sentence11: That was all for today. Thank you very much and have a good evening. Sentence12: You're welcome. Good-bye. Sentence13: I am also looking for a train to go to Birmingham New Street and to leave after 21:30. Can you book me a train that leaves on Saturday? Sentence14: Cambridge University Botanic Gardens cost 4 pounds, and is a park type attraction. Sentence15: What attractions are at the Botanic Gardens? Is there a cost associated with the Gardens? Sentence16: There doesn't seem to be anything matching your specifications. Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User