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, I am Dennis Mitchell. 
 agent: Hello,Mitchell. How shall I guide you? 
 customer: My business meeting has been postponed, so I want to change my existing reservation. Can you guide me for changing an reservation? 
 agent: Definitely,let me check. 
 customer: Sure. 
 agent: Sorry,no reservation has found on your name. 
 customer: Ok, no problem. Thanks for your service. 
 agent: Thank you for approaching us.

A: no_reservation
****
Q: customer: Hi. 
 agent: Hello. How may I help you today? 
 customer: Janet Adams here, can you find a flight for me from CLT to PHX? 
 agent: Please mention your travelling dates? 
 customer: Ok, my trip dates are from Dec 15 to 17. 
 agent: Do you need any connecting flight for this journey? 
 customer: Yes, I need a connecting flight. 
 agent: May I know your budget for this travel? 
 customer: I am ok with any price. 
 agent: Do you need any specifications? 
 customer: No. 
 agent: Please wait a moment. 
 customer: Sure, take your time. 
 agent: There is a flight in Southwest airlines with the price 100 in economy, can I proceed with the reservation? 
 customer: Yes, please. 
 agent: Your ticket has been reserved with the flight number 1003. 
 customer: Thanks for your assistance. 
 agent: Thank you for reaching our service.

A: book
****
Q: customer: Hello,. 
 agent: Hello. How may I amend you today? 
 customer: I am David Miller. 
 agent: Ok. 
 customer: I have a desire to travel in ferry, so I am planning to travel in Staten Island Ferry in New York, EWR. 
 agent: Ok. 
 customer: Can you please make  a reservation with connected flight? 
 agent: Sure. Can you mention your travelling dates? 
 customer: My journey dates on 10/27 and 10/29. 
 agent: May I have your departure point? 
 customer: My boarding point is Dallas & Fort Worth, DFW. 
 agent: What is your price limit to travel? 
 customer: Price should be under 500. 
 agent: There is a plane Frontier which matches exactly to your request. Shall I proceed to book with flight 1002? 
 customer: Ok, proceed. 
 agent: Reservation has been confirmed. 
 customer: Thank you for your help. 
 agent: Thank you.

A:
book
****