Detailed 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
Problem:customer: Hello, myself Kevin Martinez. 
 agent: Hello. Kevin, how can I render you today? 
 customer: I want to cancel my recent reservation, can you please help me out? 
 agent: Sure, I am here to help you out. Hold on for a moment. Let me check. 
 customer: Thanks, I will wait for your response. 
 agent: Sorry Kevin, there are no flights reserved on your given name. 
 customer: It's ok, thank you for the information. 
 agent: Welcome, thank you for choosing us. Have a great day.
Solution:
no_reservation