In this task, you are given a conversation between a flight agent and the customer. You are given 4 options and you need to select the goal of the conversation. It is provided as part of customer's context, which has to be one of the following: `book`: Make a new reservation, `cancel`: Cancel an existing reservation, `no_flight`: No flight found for the customer's preference, `no_reservation`: No reservation / No change / No cancellation was made in the conversation, mostly enquiring details
Example: customer: Hi. 
 agent: Hello. How can I help you? 
 customer: I would like to change my existing reservation as my plan to go for a holiday trip got postponed. Can you please help me with this? 
 agent: Sure, may I know your name please? 
 customer: My name is Anthony Phillips. 
 agent: Please wait a moment. 
 customer: Sure. 
 agent: Unfortunately there is no reservation found with your given name. 
 customer: Not a problem, thank you for checking. 
 agent: Thank you for choosing us.
Example solution: no_reservation
Example explanation: Here the customer has not asked for any booking, he just wanted to update his already booked flight, so the status would be no_reservation

Problem: customer: Hi, I am Daniel Nelson. 
 agent: Hello Nelson. What can I do for you? 
 customer: I need to cancel my recent reservation as I met with an accident and my leg got fracture and I am unable to travel. Can you please help me out with this? 
 agent: Sure Daniel Nelson, Wait for a while. 
 customer: Ok, take your time. 
 agent: Sorry , no reservation done on the name of Daniel Nelson in previous days. 
 customer: Thanks for your information. 
 agent: Thank you for approaching us, have a nice day.
Solution: no_reservation