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
Input: customer: Hello. 
 agent: Hello, how can I aid you today? 
 customer: Due to heavy rain, I want to cancel my reservation. Can you help me? 
 agent: Sure, I am happy to help you. Can I know your name please? 
 customer: Eric Jackson here. 
 agent: Please wait for a minute, I will check the status of your reservation and get back to you. 
 customer: Ok. 
 agent: Thanks for waiting, we found a reservation on your name and it was cancelled successfully. 
 customer: Ok. Thank you so much. 
 agent: Thanks you for reaching us.
Output:
cancel