Q: 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 help you today? 
 customer: I want to cancel my reservation due to heavy snowfall at my destination place, so please help me to cancel. 
 agent: Sure, may I know your good name? 
 customer: Sure, my name is Kevin Williams. 
 agent: Please wait for a moment. 
 customer: Sure. 
 agent: We found a reservation on your good name. It has been cancelled successfully. 
 customer: Ok, thanks for your support. 
 agent: Thank you for reaching us.
A:
no_reservation