Instructions: 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
Input: customer: Hi. 
 agent: Hello, how may I help you today? 
 customer: Please help me to book a flight ticket from DTW to IAH. 
 agent: Sure, may I know your travelling dates? 
 customer: My journey dates are from Nov, 17 to Nov, 19. 
 agent: On which name shall I reserve flight ticket? 
 customer: Helen Parker. 
 agent: Do you need any specifications? 
 customer: I need  a  single connecting flight and I prefer an economy class to fly. 
 agent: Please wait. 
 customer: Sure. 
 agent: There is a flight with one connection and the price is 100 in JetBlue Airlines, can I proceed with the reservation? 
 customer: Please proceed. 
 agent: Your ticket has been reserved with the flight number 1013. 
 customer: Thank you. 
 agent: Thank you for reaching our service.
Output:
book