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

customer: Hi,. 
 agent: Hello, how may I help you? 
 customer: Please cancel my recent reservation. 
 agent: Kindly, mention your good name. 
 customer: My name is Sandra Taylor. 
 agent: No reservation found on your name. 
 customer: Thanks for the help. 
 agent: Thank you for reaching us, have a nice day.
no_reservation