You will be given a definition of a task first, then some input of the task.
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. What kind of help are you expecting from my side? 
 customer: I would like to cancel my recently done reservation, due to some health issues. Can you please help me in this? 
 agent: Sure, let me check. I am sorry to inform you that there are no reservations with your name. Can I know your name? 
 customer: My name is Janet Scott here. Thank you for your information. 
 agent: Thank you Janet, have a good day. 
 customer: Welcome.
Output:
no_reservation