You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
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

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: no_reservation
Why? 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

New input: customer: Hi. 
 agent: Hello. How can I help you at this moment? 
 customer: I need to book a flight ticket from AUS to MCO, Can you please help me for booking? 
 agent: May I know on which dates you are willing to travel? 
 customer: I would like to travel on 03/27 to return on 03/29. 
 agent: Do you need any layover in between  journey? 
 customer: I need a connecting flight. 
 agent: Is there any other specifications regarding your journey? 
 customer: No. 
 agent: Can I know your good name? 
 customer: Patrick Wilson here. 
 agent: There is a flight with the price of 100 and one connection limit. Can I proceed to booking? 
 customer: Ok, proceed for booking. 
 agent: Your ticket is booked with the flight- 1011. 
 customer: Thanks for your information. 
 agent: Thank you for reaching us.
Solution:
book