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: Hi. 
 agent: Hello, how can I help you today? 
 customer: Owing to an emergency, my meeting with client got cancelled. So I want you to cancel my recent reservation. 
 agent: Sure, can I have your name please? 
 customer: Sure, Matthew Lee here. 
 agent: Ok, please wait for a while. 
 customer: Sure. 
 agent: Thanks for waiting, there is no active reservation on your given name. 
 customer: Ok, no issues. Thank you. 
 agent: Thank you for reaching us.
Solution:
no_reservation