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: For a holiday vacation I want to go to MSP on 08/09. Aid me in booking a ticket with the name of Samantha Perez. 
 agent: Sure, I am here to help you. May I know your return date? 
 customer: On 08/11, I have to return. 
 agent: Could you please share your source code? 
 customer: Phoenix, PHX is my source point. 
 agent: Do you need any halt in between your journey? 
 customer: Yes, connection is to be 1. 
 agent: Thanks for your details, there is no flight found to reach your destination. 
 customer: Fine, I will go with another flight. Thank you for your service. 
 agent: Thank you for reaching us.

A: no_flight
****
Q: customer: Hello, I am Brain Scott. 
 agent: Hello, How can I serve you? 
 customer: I want to cancel my recent reservation due to the ongoing tornado at my destination. Can you help me to cancel my recent reservation? 
 agent: Sure, I am mirthful to help you. Ok, wait for a minute. 
 customer: Sure. 
 agent: We found a reservation on your name, Shall I proceed with the cancellation? 
 customer: Ok, proceed. 
 agent: Your reservation has been cancelled. 
 customer: Thank you for your quick response. 
 agent: Thank you for opting us, Have a great day.

A: cancel
****
Q: customer: Hello. 
 agent: Hello, how may I help you? 
 customer: I would like to meet my business partner at Orlando, please book a ticket from BOS to MCO. 
 agent: Sure, please share your journey dates? 
 customer: My journey dates are on Jan 11 and Jan 13. 
 agent: Do you have any specifications? 
 customer: I need a flight with single connection. 
 agent: Is there any class preference? 
 customer: No, thank you for asking. 
 agent: May I know your good name? 
 customer: My name is Anna King. 
 agent: We found a flight in Spirit airlines, flight number is 1022 with single connection and price is 300 business class. Shall I proceed? 
 customer: Ok, please proceed for booking. 
 agent: Your ticket has been booked. 
 customer: Thank you for your services. 
 agent: Thank you for choosing us.

A:
book
****