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, how may I assist you today? 
 customer: I am Jonathan Thomas. Can you please help me in flight ticket booking process from ATL to SEA? 
 agent: Sure, I will help you. Please send your travelling dates. 
 customer: Thank you, I want to take off on 05/20 and please book my return ticket also on 05/22. 
 agent: Please wait for a moment, I will check the availability. 
 customer: Ok. 
 agent: There is a connecting flight available with Delta airline, shall I book it? 
 customer: Please confirm this flight ticket for me. 
 agent: Your booking is done with flight number 1005. Happy journey. 
 customer: Thank you for your help. 
 agent: You are welcome, have a nice day.
A:
book