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: Hello. 
 agent: Hello. 
 customer: I am James White. 
 agent: I hope you are fine, how can I help you now? 
 customer: I am looking for a flight with connection 1.Can you help me out to book a ticket? 
 agent: Sure, I will help you with that. May I the preferable dates of your journey? 
 customer: I would like to travel on 01/16 and return date is 01/18. 
 agent: Ok, can you please mention the take off and landing airport codes? 
 customer: I want to travel from MSP to MSP. 
 agent: Please wait for a moment, I will check the details and get back to you. 
 customer: Sure, but try to find a best flight for me. 
 agent: Thank you for waiting, there is a flight 1006 in Delta airline has the price 100.Can I proceed with this booking? 
 customer: Yes, please proceed the booking. 
 agent: Your ticket has been booked, have a safe journey. 
 customer: That's great. Thank you for your service. 
 agent: You are welcome. Thank you for approaching us.
A:
book