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: Hi, I am Ruth Thompson.
agent: Hello, how can I support you today?
customer: I would like to attend Classical music event in Carnegie Hall at Orlando, FL-MCO, could you please help me to book a flight ticket from Las Vegas, NV-LAS?
agent: Sure, I am here to assist you.
customer: Thank you.
agent: Could you please help me with your travelling dates?
customer: I want to start on 09/15 and my return date will be on 09/17.
agent: May I know your price limit?
customer: I can pay up to 1000 for the flight ticket.
agent: Ok, please wait for a while.
customer: Ok.
agent: There is a Southwest 1007 airline with fare of 100 and a halt in between the journey.
customer: Everything is fine, you can go ahead with the booking.
agent: Your booking has been confirmed on name of Ruth Thompson.
customer: Thank you for your assistance in booking.
agent: Thank you for approaching us, have a nice day.
book