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
One example: customer: Hi. 
 agent: Hello. How can I help you? 
 customer: I would like to change my existing reservation as my plan to go for a holiday trip got postponed. Can you please help me with this? 
 agent: Sure, may I know your name please? 
 customer: My name is Anthony Phillips. 
 agent: Please wait a moment. 
 customer: Sure. 
 agent: Unfortunately there is no reservation found with your given name. 
 customer: Not a problem, thank you for checking. 
 agent: Thank you for choosing us.
Solution is here: no_reservation
Explanation: Here the customer has not asked for any booking, he just wanted to update his already booked flight, so the status would be no_reservation

Now, solve this: customer: Hi. 
 agent: Hello, how can I help you? 
 customer: Myself Laura Perez. My kids were bored with their daily schedule, so I want to make their mind refresh. I have decided to take a tour to Washington. Can you please book me a flight ticket on 07/31 along with a return ticket on 08/02? 
 agent: Sure, we are here to help you. Can you share me your journey locations? 
 customer: Thank you. Sure, I will start from LAX and land at IAD. 
 agent: Ok, wait for some time. 
 customer: Ok. 
 agent: We found UA airline with connecting flight and number 1003 fare of 100. Shall I proceed for booking? 
 customer: That's perfect, please proceed. 
 agent: Your ticket has been confirmed. 
 customer: Thank you for your assistance. 
 agent: Thanks for choosing us.
Solution:
book