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 assist you? 
 customer: Can you please search a flight ticket from AUS to LGA? 
 agent: Sure, may I know your travel dates please? 
 customer: Ok, my travelling dates are 10/25 and 10/27. 
 agent: Thanks for your patience. I have found Delta airlines which flies with one connection. May I know your name please? 
 customer: Ok, myself Kimberly Carter. Please confirm my flight ticket. 
 agent: Thank you Kimberly. Sure your flight ticket has been confirmed now. 
 customer: Ok, fine thank you for your help. 
 agent: Thank you.
Output:
book