instruction:
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
question:
customer: Hello,. 
 agent: Hello, how can I aid you? 
 customer: I am Charles Miller. I am planning to go for Yosemite Adventure with my friends at Detroit, can you please book a ticket under the price 5000? 
 agent: Sure, can you share your trip dates? 
 customer: I want to travel on 04/26, and need to catch return flight on 04/28. 
 agent: Do you need any halt in between your journey? 
 customer: I need a halt. 
 agent: May I know your journey airport codes? 
 customer:  I need to leave from my nearest airport HOU to reach DTW. 
 agent: Give me a minute. 
 customer: Sure. 
 agent: There is a connecting flight with number 1013 in airline Southwest, the fare is 100. Can I book it? 
 customer: Proceed with the booking. 
 agent: Your ticket is reserved. 
 customer: Thanks for the help. 
 agent: Thank you for opting us.
answer:
book


question:
customer: Hi, I am Kimberly Nelson. 
 agent: Hello, How can I help you today? 
 customer: I am one of the best hacker in my company, unfortunately my Las Vegas, NV - LAS branch websites was hacked by some one so they called me to solve that problem. Can you help me to book a connecting flight? 
 agent: Sure, can you please share me your travel dates? 
 customer: I want to fly on 01/10 and recur on 01/12. 
 agent: Ok, please wait a moment. 
 customer: Sure. 
 agent: Can you please share me your airport code? 
 customer: I want to board from Washington DC - DCA. 
 agent: Ok, please wait  a moment. 
 customer: Sure. 
 agent: Sorry to say, no flights found with your requirement. 
 customer: Ok, thank you. 
 agent: Thanks for reaching us.
answer:
no_flight


question:
customer: Hi. 
 agent: Hello, how can I guide you for today? 
 customer: Rebecca Hall here. I would like to book a ticket from DCA to IAH, can you please help me with that? 
 agent: Can you please share on what dates you are willing to travel? 
 customer: The travel dates are from 01/24 to 01/26. 
 agent: Please give me a minute, I will check the availability of flights on this route. 
 customer: Ok. 
 agent: There is a flight with ticket fare 200 in UA airlines with a stopover. Is it ok for you? 
 customer: Please proceed. 
 agent: Your booking is confirmed with flight number 1012. 
 customer: Thank you for your help. 
 agent: Thank you for contacting us, have a nice day.
answer:
book