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 can I help you? 
 customer: I am Laura Jones. I am planning to cancel my recent reservation, due to some urgent work. Can you help me out to book a ticket? 
 agent: Please give me a minute. 
 customer: Sure. 
 agent: Sorry, there is no reservation found under your name. 
 customer: That's fine. Thank you for your help. 
 agent: Thank you for reaching us.
Solution:
no_reservation