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

Q: customer: Hi. I am Daniel Moore. 
 agent: Hello, how can I help you? 
 customer: I want to attend a political meeting at Charlotte. Can you help me in my reservation? 
 agent: Sure, I will help you. 
 customer: Thank you. 
 agent: Please provide me your travelling dates? 
 customer: I Will start my journey on 06/14. I will return back on 06/16. 
 agent: Kindly mention me your airport codes? 
 customer: My source airport code is New York, NY - JFK. My destination airport code is Charlotte, NC - CLT. 
 agent: Do you have any specifications? 
 customer: I need a layover in my journey. I can pay up to 1000. 
 agent: Please wait a minute. 
 customer: Sure. 
 agent: Thanks for waiting, sorry to inform you that there are no flights with your specifications. 
 customer: Not an issue. Thank you for your kind information. 
 agent: Thank you for reaching us.

A: no_flight
****
Q: customer: Hi. 
 agent: Hello. How can I assist you? 
 customer: Due to some issues, I am willing to change my existing reservation. Can you please help me for this? 
 agent: Sure, can I know your name please? 
 customer: I am Rebecca Lee. 
 agent: Ok, wait a moment please. 
 customer: Sure. 
 agent: Sorry, there is no reservation found on your name. 
 customer: Oh! It may not be booked properly due to some technical issues while booking. Thank you for checking. 
 agent: Thank you for approaching us.

A: no_reservation
****
Q: customer: Hello. 
 agent: Hello, how can I help you today? 
 customer: I am planning to attend a Snooker's competition in New York JFK from IAH. Can you find a flight ticket for me? 
 agent: Sure, I am glad to help you in booking. Can you please share your travel dates? 
 customer: Thank you. My planned trip dates are on May 05 and return on May 07. 
 agent: Ok, may I know your name? 
 customer: Ok, my name is Nancy Allen. 
 agent: Do you have any specification? 
 customer: Ok, I want a business class flight. 
 agent: Sorry, no flights are available on your preferable travel dates. 
 customer: Ok, not an issue. Thank you for your information. 
 agent: Thank you for reaching us, have a nice day.

A:
no_flight
****