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. 
 agent: Hello. 
 customer: I am Nicole Edwards. 
 agent: How may I aid you? 
 customer: I am planning to go for IAD from SEA, can you please help me out? 
 agent: Sure, I am here to help you. Could you please share your travelling dates? 
 customer: My travelling dates are 06/13 and 06/15. 
 agent: Do you have any requirements? 
 customer: I need single connection flight. 
 agent: There is a connecting flight-1009 of JetBlue airlines, shall I proceed? 
 customer: Ok, please confirm my flight ticket. 
 agent: Ok, your booking is done. 
 customer: Thank you. 
 agent: You are welcome.
A:
book