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

[EX Q]: customer: Hello.
agent: Hello. How may I assist you today?
customer: I am Sarah Mitchell.
agent: Welcome to flight booking agency Sarah.
customer: Due to sudden change in my planned dates of journey, I would like to change my reservation. Can you please help me out with changing of my reservation?
agent: Sure, I will help you with that.
customer: Sure.
agent: I have found your reservation. Can you please provide your preferable airport codes?
customer: Sure, my travel airport codes are from SFO to IAH.
agent: Ok, may I know your planned dates of travelling?
customer: My travel dates are 03/25 and return back on 03/27.
agent: Please wait a moment to check the flights.
customer: Ok, take your time.
agent: We regret to tell you there are no flights moving to your region with you planned dates of travelling.
customer: No issues with that one. Thank you for your immediate response.
agent: Thank you for reaching us, have a great day.
customer: Welcome.
[EX A]: no_flight

[EX Q]: customer: Hi.
agent: Hello, how may I support you?
customer: I have planned to book a plane ticket from PHL to SEA, can you assist me in booking my ticket?
agent: Sure, when are you planning to travel?
customer: My preferred dates are Oct 18th and Oct 20th.
agent: What is your maximum connection limit?
customer: I need single connection between my trip.
agent: Do you have any preferences?
customer: No.
agent: Please forward your name.
customer: Matthew Walker.
agent: Ok, please wait.
customer: Sure.
agent: Thanks for waiting, there are no flights going on your way at this moment.
customer: No problem, thank you for searching.
agent: Thank you for reaching us.
[EX A]: no_flight

[EX Q]: customer: Hello.
agent: Hello, how can I help you today?
customer: Please book a ticket from ORD to PHL to attend my sister wedding.
agent: Sure, please share your planned travel dates?
customer: My travelling dates are Mar 23 and Mar 25.
agent: Do you have any connection limit?
customer: I am comfortable with any connection.
agent: Can I have your name please?
customer: Sure, I am Laura Hernandez.
agent: Any other preferences?
customer: No.
agent: Southwest airline flight 1011 available with connection limit 1 and fare is 100, shall I confirm this economy class flight?
customer: Ok, please proceed.
agent: Ok, your ticket has been processed.
customer: Thank you.
agent: Thank you for opting us.
[EX A]:
book