Given the task definition and input, reply with output. 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

customer: Hello.
agent: Hello, how can I help you today?
customer: I am looking for a flight from OAK to ORD, can you help me in booking?
agent: Sure, kindly share your travel dates.
customer: Sure, my planned travel dates are Nov 24 and Nov 26.
agent: Do you have any connection limit?
customer: Please look for a direct flight.
agent: Is there any other specification?
customer: No.
agent: Please share your name.
customer: Myself Kathleen Carter.
agent: Please wait.
customer: Sure, I will wait for your response.
agent: There is a flight with your requirement, airline is United Airlines with price 200 and direct connection. Shall I proceed with booking?
customer: That's fine, please proceed in booking.
agent: Your booking is done and flight number is 1004.
customer: Thank you for the service.
agent: Thanks for reaching us.
book