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: Hello.
agent: Hello. How can I help you?
customer: I am planning to visit Philadelphia, can you please book me a ticket from LAS to PHL?
agent: Sure, I will help you. Can you please share your travel dates?
customer: My preferable journey dates are from 03/17 to 03/19.
agent: Please wait a moment.
customer: Sure.
agent: Hawaiian airlines are providing service on your route with 1 connection and fare is 100. Can I proceed?
customer: Please book my ticket with the name Margaret King.
agent: Ok. Your booking is done with flight 1012.
customer: Thank you for booking my ticket.
agent: Thank you for choosing us.

A: book
****
Q: customer: Hi.
agent: Hello. How may I help you?
customer: Can you please help me with cancelling my recent reservation?
agent: Sure, may I know your name please?
customer: My name is Brain Wright.
agent: Sorry, there is no active reservation found with your name in our records.
customer: That's ok. Thank you.
agent: Most welcome.

A: no_reservation
****
Q: customer: Hi. I am Matthew Jackson.
agent: Hello, how may I render you today?
customer: I need to attend a workshop in Smithsonian Institution at Washington, DCA. Can you help me in my booking?
agent: Sure, we are happy to help you.
customer: Thank you.
agent: Can you please let me know your boarding point?
customer: My source airport code is Denver, CO - DEN.
agent: Do you prefer any way station in between journey?
customer: Yes, I need a halt in my journey.
agent: When you are planning to make your journey?
customer: I want to start my journey on 10/14. I want to return on 10/16.
agent: Ok, please wait for a while.
customer: Sure.
agent: We found a Frontier airline, flight number 1018 and the fare of 100 with single stopover.
customer: Proceed with my booking.
agent: Your ticket has been reserved.
customer: Thank you for your help.
agent: Thank you for choosing us. Have a safe journey.

A:
book
****