Part 1. Definition
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
Part 2. 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.
Answer: 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
Part 3. Exercise
customer: Hello. 
 agent: Hello, how may I guide you for today? 
 customer: I am David Jones. I would like to book a ticket from JFK to HOU, can you please help me out? 
 agent: I am happy to help you about your flight ticket booking. Can you please provide your planned dates of journey? 
 customer: I am travelling on these dates 04/17 and 04/19. 
 agent: Delta airline is providing a flight which costs 100 with a single connection limit. Would you like to book this flight? 
 customer: Ok, you can proceed with this flight. 
 agent: I have booked your flight ticket with the flight 1025. Most welcome, thank you for opting our service. 
 customer: Thank you for your services.
Answer:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
book