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. 
 customer: I am Raymond King. 
 agent: How can I aid you today? 
 customer: Can you please help me in booking my flight ticket from AUS to DCA? 
 agent: Sure, I am here to help you. Could you please help me with your travelling dates? 
 customer: Ok, my travelling dates are 03/10 and 03/12. 
 agent: May I know your lay by's? 
 customer: I need connecting flight. 
 agent: Ok, please wait for a while. There is a UA 1013 airline with fare of 100 and a halt in between the journey. 
 customer: Ok, sure. 
 agent: Your booking has been confirmed on name of Raymond King. 
 customer: Thank you. 
 agent: Thank you for approaching us, have a nice day.
book