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
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.
Example solution: no_reservation
Example 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

Problem: customer: Hello. I am Amanda Walker. 
 agent: Hello, What kind of help are you expecting from our side? 
 customer: Please book me a ticket from PHL to HOU to meet my old friends. 
 agent: Sure, Can you please let me know your travelling dates? 
 customer: I have planned to travel on 07/15 and 07/17. 
 agent: Ok, which type of class do you prefer for your journey? 
 customer: I am ok with any class. 
 agent: Do you need any whistle stop in between your journey? 
 customer: I need a halt. 
 agent: Ok, please wait a moment. let me search a flight for you. 
 customer: Ok, I will wait. 
 agent: We have found a connected flight with Frontier airlines, flight number 1000 and the fare of 100. Shall I proceed for booking? 
 customer: Ok, please book this ticket. 
 agent: Your ticket has been reserved. 
 customer: Thank you. 
 agent: My pleasure, I hope you will enjoy this airline.
Solution: book