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
Q: customer: Hello. 
 agent: Hello, how may I assist you today? 
 customer: I want to cancel my recent reservation. Can you help me out? 
 agent: Sure, may I know your name for the cancellation process? 
 customer: Nicholas Hernandez. 
 agent: Sorry, as per your concern I can not amend your reservation, as your reservation is not found as per our records. 
 customer: That's ok. Anyways, thank you. 
 agent: Welcome, thank you for reaching us.
A:
no_reservation