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: Hello. 
 agent: Hello, how may I assist you today? 
 customer: Can you please make my reservation from LAX to HOU? 
 agent: Sure, may I know your planned travel dates ? 
 customer: Sure, my journey dates are Dec 03 and Dec 05. 
 agent: Do you have any limits on number of connections? 
 customer: I need a single connection flight. 
 agent: Do you have any another specifications on your journey? 
 customer: No. 
 agent: May I know your name for the booking process? 
 customer: My name is Katherine Hernandez. 
 agent: Delta  Airlines providing a flight with the price 100 with single connection. Can I proceed for the booking? 
 customer: Ok, please proceed for booking. 
 agent: Your flight ticket reservation done with the flight number 1008. 
 customer: Thank you for your service.
Output:
book