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 input: 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 output: 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
Q: customer: Hello. 
 agent: Hello, How can I help you? 
 customer: Can you please help me in booking a flight ticket from PHX to SFO? 
 agent: Sure, May I know your travelling dates? 
 customer: I would like to fly on Aug 30 and return on Sept 01. 
 agent: Do you have any connection limit? 
 customer: I need a single connection. 
 agent: Are there any other preferences? 
 customer: I would like to prefer an economy class. 
 agent: May I know your name? 
 customer: Myself Jeffrey King. 
 agent: You have a connecting flight 1001 in AA airlines and price 100 in economy class, Shall I proceed? 
 customer: You can proceed to booking. 
 agent:  Your ticket has been processed and it will be send to your Email-Id shortly. 
 customer: Thank you. 
 agent: Thank you.
A:
book