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
One example is below.
Q: 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.
A: no_reservation
Rationale: 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: Hi, I am Michael Carter. 
 agent: Hello, how may I support you today? 
 customer: I need to book a ticket from BOS to DFW for visiting the Urban Air Trampoline Park with my office colleagues. 
 agent: Sure, could you please share your dates of travelling? 
 customer: My travelling dates are 03/05 and 03/07. 
 agent: Ok, please specify your airport codes to proceed? Sorry for inconvenience. Do you have any other restrictions to be met? 
 customer: Make sure that the price should be below 1000 and with 1 connection. 
 agent: OK, please wait for a while, let me search a flight for you. 
 customer: Sure. 
 agent: Thanks for waiting, we are happy to inform you that we have found a flight of Southwest airline, flight number-1014 connections-1 and ticket fare is 100. Would you like me to proceed? 
 customer: You can proceed with booking. 
 agent: Sure, your dates has been reserved. 
 customer: Thank you for your service. 
 agent: Thanks for consulting us, have a great journey ahead.
A:
book