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: Hello. 
 agent: Hello. 
 customer: Edward Young here. 
 agent: How may I assist you today? 
 customer: I would like to visit New York to meet my old friend there, so can you please help me out with booking of a flight ticket? 
 agent: Sure, when would you like to fly? 
 customer: I would like to fly on 08/13 and please book a return ticket on 08/15. 
 agent: Ok, please provide your airport codes that you want to travel. 
 customer: Sure, I want to travel from AUS to JFK. 
 agent: Please give me a moment. 
 customer: Sure, take your time to check. Please ensure that flight should be with single connection. 
 agent: Thank you for waiting. 
 customer: No problem. 
 agent: There is no flights found as per your requested details. 
 customer: Oh! so sad to hear. Anyway, thank you for the information. 
 agent: Welcome, have a great day.
Solution:
no_flight