Given the task definition and input, reply with output. 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

customer: Hello. 
 agent: Hello. How can I assist you? 
 customer: I want to cancel my flight reservation as I am sick, can you please help me? 
 agent: Ok, may I know your name to proceed further? 
 customer: My reservation was done in the name of Patricia Young. 
 agent: Sorry, no reservation found on your name to cancel. 
 customer: Not an issue. Anyway, thank you for checking. 
 agent: Most welcome.
no_reservation