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 assist you? 
 customer: I am Pamela Martinez. 
 agent: May I know your travelling details? 
 customer: Actually I need to cancel my reservation. Can you please help me? 
 agent: Sure, Please wait a minute. 
 customer: OK. 
 agent: Sorry, No reservation found on your name. Thank you for choosing us. 
 customer: Its k cool. Thank you.
Output:
no_reservation