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. 
 agent: Hello, how may I support you today? 
 customer: Angela Lewis here. I want to cancel my recent reservation due to some bad weather conditions. Can you please help me for this one? 
 agent: Sure, please wait for a while. 
 customer: Take your time. 
 agent: Sorry to say that, there is no active reservation found on your name to cancel. 
 customer: No issues, thank you for your response. 
 agent: Thank you for opting us.
Solution:
no_reservation