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

Input: Consider Input: customer: Hello.
agent: Hello. How may I assist you?
customer: Due to sudden change of my business meeting because of some technical problem, I need to change my reservation so can you help me with that?
agent: Sure, I am here to help you out. May I know your name please?
customer: Thank you. I am Dennis Martin.
agent: Wait a moment please.
customer: Sure.
agent: Dennis Martin, we haven't found any reservation under your name in our database.
customer: Ok, no issues. Thanks for the information.
agent: Thank you for choosing us.

Output: no_reservation

Input: Consider Input: customer: Hi.
agent: Hello. How may I guide you today?
customer: I want to change my existing reservation. Can you help me for that one?
agent: Sure, I will help you with that. Can I know your name to check your previous reservation?
customer: Sure, Kevin Allen here.
agent: Please be on hold to check.
customer: Sure.
agent: We regret to inform you that, there is no reservation found on your name in our reservation list.
customer: No issues, thank you for the information.
agent: Thank you for approaching us, have a great day.

Output: no_reservation

Input: Consider Input: customer: Hello. I am Matthew Thomas.
agent: Hello, how may I amend you today?
customer: I need to attend conference meeting at Los Angeles, CA - LAX. Can you aid me in booking a flight ticket from Phoenix, AZ - PHX?
agent: Please provide your travelling dates?
customer: 04/05 and 04/07 are my travelling dates.
agent: Do you prefer any flag station in between the journey?
customer: I prefer single connection.
agent: We found a flight 1017 in Jet Blue airlines the price is 200 with a break in between the journey.
customer: Please proceed for booking.
agent: Your ticket has been confirmed.
customer: Thanks for booking my ticket.
agent: Thank you for making us to serve you.
Output: book