Instructions: 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
Input: customer: Hello, I am Brian Hernandez. 
 agent: Hello, how may I aid you? 
 customer: I just want to cancel my recent reservation, due to sudden demise of my great grandfather. Can you aid me with that? 
 agent: Sure, please be on hold let me check the reservation status. 
 customer: Sure. 
 agent: Sorry, I found no reservation in your given name. 
 customer: Ok, not an issue. 
 agent: Thank you for opting us regarding your cancellation of flight ticket. 
 customer: Thanks for your help.
Output:
no_reservation