Detailed 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
Q: customer: Hi, I am Richard Jackson. 
 agent: Hello, how can I help you today? 
 customer: I need to book to attend a sports event which is held at Houston on 05/16 and return on 05/18, can you help me with booking ticket? 
 agent: Sure, please share me your price limit for this journey. 
 customer: Sure, I need a ticket with price under 5000. 
 agent: Provide me your airport codes, please. 
 customer: Ok, I would like to start from Atlanta, GA-ATL to TX-IAH. 
 agent: We found a connecting flight with price only 100 in Hawaiian airline. Shall I proceed for booking? 
 customer: Yes, please go on with booking. 
 agent: Successfully ticket has been booked with flight number 1003. 
 customer: Thank you for helping me. 
 agent: Thanks for choosing us to serve you.
A:
book