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, how may I assist you? 
 customer: Owning an emergency I would like to cancel my resent reservation. Can you help me with it? 
 agent: Sure, may I know your good name please? 
 customer: I am Shirley Walker. 
 agent: Thanks for giving your name, there is no reservation on your name. 
 customer: Its ok, thank you for your information. 
 agent: Thanks for choosing us, have a good day.
Output:
no_reservation