You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
One example: 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
Solution is here: Answer: (A) User
Explanation: The sentence 1 is said by a user because the intent of it says that the information has to be gathered from the system

Now, solve this: Sentence1: Okay, happy to help! would you like more information or a reservation? Sentence2: I have several trains traveling to stansted airport, which day would you like to leave? Sentence3: no. that is all i need. thanks. bye. Sentence4: Yes, that sounds good. Thank you. Sentence5: I need to take a train from Cambridge to the stansted airport, which train would be the best one? Sentence6: I would take the guesthouse. Sentence7: Is there anything else I can help you with? Sentence8: I need to leave on Tuesday after 16:00, please. Sentence9: The hotel please. I need to book it for 3 people 4 nights starting friday. Sentence10: Okay I have two different options. There is a guesthouse and a hotel. Both have free parking and wifi. Any preference as to which one? Sentence11: Great! Have a nice evening. Sentence12: TR0471 leaving Cambridge on Tuesday at 16:40 and arriving at Stansted Airport by 17:08. Would this one work for you? Sentence13: Yes I'm looking for a place to stay in the south part of town with a 3 star rating. Sentence14: You are booked into the lensfield hotel. The reference number is O46I4NOR . My I help you with something else? Question: Who has spoken the sentence 5? (A) User (B) System
Solution:
Answer: (B) System