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: Hello. 
 agent: Hello, how may I guide you? 
 customer: I am Paul Scott. Owing to an emergency, I want to cancel my recent reservation. Can you help me out? 
 agent: Sure, please hold on for a moment, let me check. 
 customer: Ok, take your own time. 
 agent: I am sorry, there are no reservations with your name. Thank you, have a good day.
no_reservation