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, how can I aid you for today? 
 customer: I have a business conference meeting at Las Vegas. Can you please help me in reserving the ticket from EWR to LAS? 
 agent: I am here to help you in booking your flight ticket, can you please let me know your planned dates of journey? 
 customer: I am planning my trip on June 20 and again I will return back on June 22. 
 agent: Would you like to have a single connecting flight or a direct flight for your journey? 
 customer: I want to travel in single connection flight. 
 agent: Is there any other requirement for your journey to complete the trip? 
 customer: I would like to depart in the morning. 
 agent: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 100 is provided by American Airlines. Shall I proceed with this flight ticket booking? 
 customer: Yes, please go ahead and reserve the ticket. 
 agent: Can you please provide your name to confirm the booking under your name? 
 customer: Myself Pamela Scott. 
 agent: I have confirmed your flight ticket successfully with the flight 1010 in an economy class. 
 customer: Thank you very much for reserving the ticket. 
 agent: You are welcome, thank you for employing our service.
Solution:
book