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: Hi. 
 agent: Hello, how can I guide you today? 
 customer: Can you please help me in reserving a ticket to reach Houston with fare 1000? 
 agent: Sure, I am glad to help you. 
 customer: Thank you. 
 agent: Help me with your airport codes please? 
 customer: My airport codes are from LAS to IAH. 
 agent: On which dates you want me to book a flight ticket for you? 
 customer: Please book a ticket on 01/22 and need to return on 01/24. 
 agent: Thanks for your details, we found a connecting flight with flight number 1019 in Hawaiian airline and fare is of 100. Shall I reserve it? 
 customer: You can reserve it. 
 agent: May I know your good name please? 
 customer: I am Stephen Davis. 
 agent: Your ticket has been confirmed. 
 customer: Thank you for your extendable support. 
 agent: Thank you for choosing us.

A: book
****
Q: customer: Hello. 
 agent: Hello. 
 customer: Larry Allen here. 
 agent: How may I assist you? 
 customer: I want to travel from SEA to LAX for my business trip, can you please help me out with booking of a flight ticket on those locations? 
 agent: May I know your travelling dates please? 
 customer: Sure, I am planning to move on 11/07 and please book my return ticket also on 11/09. 
 agent: Ok, please wait for a moment. 
 customer: Sure. 
 agent: Flight-1007 is available for you with 1 connection at the price of 100, can I proceed with booking? 
 customer: That's fine for me to travel, you can proceed with booking. 
 agent: Your booking is done. 
 customer: Thank you for your help in booking of my ticket. 
 agent: Thank you for choosing us. 
 customer: Welcome.

A: book
****
Q: customer: Hello. 
 agent: Hello, how can I help you today? 
 customer: Can you aid me in booking a flight ticket from LGA to CLT? 
 agent: Sure, may I know your planned trip dates? 
 customer: Sure, I would like to go on Oct 20th and return back on Oct 22nd. 
 agent: Do you have any connection limit? 
 customer: Ensure it is a single connecting flight. 
 agent: Is there any class preference? 
 customer: Ensure it is in the business class. 
 agent: May I know your arrival and depart timings? 
 customer: No, I don't have any specific timings. 
 agent: Do you have any other specifications? 
 customer: No, I don't have any other specifications. 
 agent: Please forward your name. 
 customer: Myself Ronald Brown. 
 agent: Sorry, there are no flights found on your specified routes. 
 customer: That's ok, thank you for checking. 
 agent: Thank you for availing us. 
 customer: Welcome.

A:
no_flight
****