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. 
 customer: I am Jennifer Jackson. 
 agent: How may I aid you? 
 customer: I am planning to attend music concert at AUS, can you please help me with booking a flight ticket from PHL? 
 agent: Sure, I am here to help you in booking process. Could you please provide me your journey dates? 
 customer: Sure, I would like to take off on Sept 5 and return on Sept 7. 
 agent: May I know your connection limit? 
 customer: Yes, make sure that the connection limit is 1. 
 agent: Please wait for a moment. 
 customer: Sure, take your time. 
 agent: Based on your details, there is a flight with 1 connection in AA airlines and price is 100. Can I proceed? 
 customer: Yes, please proceed with the booking. 
 agent: Ok, your ticket is reserved with the flight 1025. 
 customer: Thank you for your help. 
 agent: Thank you for choosing us. 
 customer: You are welcome.

A: book
****
Q: customer: Hi, I am Jacob Robinson. 
 agent: Hello, How can I assist you? 
 customer: I would like to enjoy sky view observatory in Settle on 10/30. Can you make a return ticket reservation on 11/01? 
 agent: Sure, Please help me with your journey codes. 
 customer: Sure, I am heading towards Seattle SEA from MSP. 
 agent: Please wait a moment. 
 customer: Sure. 
 agent: Sorry, No flights found with your preferable dates. 
 customer: Ok, not an issue. Thank you for your assistance. 
 agent: Thank you for reaching us.

A: no_flight
****
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
****