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: Hi. 
 agent: Hello. 
 customer: I am Anthony King. 
 agent: How may I assist you? 
 customer: Would you it be possible to cancel my reservation? 
 agent: Sure, I am here to help you with your concern. 
 customer: Thanks. 
 agent: Please wait a moment, I will check your reservation status and revert you. 
 customer: Sure, take your time. 
 agent: Anthony, no reservation has been found on your name in our database. 
 customer: It's ok, thanks for your information. 
 agent: Thank you for choosing our agency.
Output:
no_reservation