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: I have two different ones that are great. One is cheaper and the other is moderately priced. Do you have a preference? Sentence2: Yes, there are 70 different options Do you have a preference for day, and time? Sentence3: Yes, please! I'd like it for 15:15 on Thursday for 7 people. Sentence4: That won't be necessary. Sentence5: Yes, I'd like to leave Cambridge on Friday, sometime after 12:30. Sentence6: Booked! Reference number: S22TYNUQ . The table is reserved for 15 minutes. Sentence7: I've got a craving for some pasta. Can you find me a good Italian restaurant on the west side of the city? Sentence8: That's the la margherita. Do you want me to book a reservation? Sentence9: Great. I also need a train to stevenage. Sentence10: No, that will be all thank you for your help. Sentence11: There is a train that leaves at 1:21pm and arrives at 2:10pm. Do you want me to book? Sentence12: Thank you so much for using our services! Goodbye. Sentence13: Is there anything more I can help you with? Sentence14: Yes, definitely the cheap one. Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User