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: Hi.
agent: Hello, How exactly I can serve you the best today?
customer: I need to change my trip dates in my recent reservation, can you serve me in changing this?
agent: Sure, I will help you with that.
customer: Thanks.
agent: May I know your name to check your details in our database?
customer: Lisa Evans is my name, you can check with this.
agent: Please wait a while.
customer: OK.
agent: Thank you for waiting. I have checked in reservation list to change your ticket, but could not find any reservation with your name.
customer: OK. Not a problem, Thanks for your time with us.
agent: Thank you for choosing us.

Output: no_reservation

Input: Consider Input: customer: Hello.
agent: Hello, how can I help you?
customer: I want to travel from EWR to AUS. My travelling dates are from 07/14 to 07/16.
agent: Ok, please wait for a moment.
customer: Make sure that there is 1 connection.
agent: Sorry, there are no flights available regarding your journey.
customer: That's ok.
agent: Do you want any other information please? Ok. Thank you and have a nice day. May I know your name please?
customer: Gary Allen here. Thank you for your support.

Output: no_flight

Input: Consider Input: customer: Hi, I am Kevin Williams.
agent: Hello, how may I aid you?
customer: I want to attend a business meeting at New York, NY-LGA, can you please book me a ticket from Washington, DC-DCA?
agent: Sure, may I know your travel dates?
customer: My travel dates are from 01/29 to 01/31.
agent: Do you have any specifications?
customer: My price limit is 500. I want a single connection in between my journey.
agent: OK, please wait a moment.
customer: Ok.
agent: Sorry, there were no flights found on your route.
customer: No problem, thanks for your information.
agent: Thank you for reaching us.
Output: no_flight