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. I am Ronald Thompson. 
 agent: Hello, How can I assist you today? 
 customer: I made a reservation earlier but now I want to cancel it as my plan to go for shopping got cancelled. Can you help me with cancellation? 
 agent: Sure, I will help you with that. Please wait a while. 
 customer: Sure. 
 agent: We found a reservation on your name, and it has been cancelled sucessfully. 
 customer: Thanks for your service. 
 agent: Thank you for reaching us.
Solution:
cancel