Q: 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 help you? 
 customer: Can you please reserve me a flight ticket from DCA to CLT? 
 agent: Sure, I will help you in booking the ticket. May I know your travelling dates please? 
 customer: My trip dates are 09/17 - 09/19. 
 agent: Do you have any other specifications? 
 customer: I need a single connection. 
 agent: Please help me with your name for booking. 
 customer: Emma Perez here. 
 agent: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 200 with flight number 1017. Shall I proceed with this flight? 
 customer: Please reserve. 
 agent: Your booking is done. 
 customer: Thank you. 
 agent: Most welcome.
A:
book