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

Example Input: customer: Hi, I am Jerry Lopez. 
 agent: Hello, how can I help you today? 
 customer: Could you please reserve me a flight ticket to Houston, TX - IAH from Denver, CO - DEN? 
 agent: Sure, we are here to help you. 
 customer: Thank you. 
 agent: Kindly mention your travel dates. 
 customer: My travel dates are 07/06 - 07/08. 
 agent: How much can you afford for this journey? 
 customer: I can afford up to 500 only. 
 agent: Ok, please wait a moment. 
 customer: Sure. 
 agent: There is a flight with your requirement, airline is AA with price 200 and single connection. Shall I proceed with booking? 
 customer: Please reserve. 
 agent: Your booking is done and flight number is 1026. 
 customer: Thank you. 
 agent: Thanks for reaching us.
Example Output: book

Example Input: customer: Hello. 
 agent: Hello. May I know your name? 
 customer: Sure, I am Sandra Allen. 
 agent: How can I assist you today? 
 customer: Today, can you help me in booking a ticket to Atlanta? 
 agent: Sure, we are delighted to help you. When you are willing to travel to Atlanta? 
 customer: I am planning to meet my children and wife in Atlanta, as we planned to visit Georgia Aquarium on 03/21. 
 agent: Ok. May I know your recur date? 
 customer: We planned the trip for couple of dates, so I would like to go on 03/20 and I intend to return back on 03/22. 
 agent: Kindly share your airport codes? Do you want any lay bay in your journey? 
 customer: Sure, I will depart from New York, LGA and landing at Atlanta ATL. 
 agent: Ok. 
 customer: Yes, I am comfortable to travel if there is one stopover in between my journey. 
 agent: Please be online, I will check the availability and revert to you. 
 customer: Sure. 
 agent: Thanks for waiting,. 
 customer: Ok. 
 agent: Hawaiian airlines are providing service on your route with 1 connection. Can I proceed? 
 customer: Ok, please proceed for booking. 
 agent: Your booking is done with flight 1027. 
 customer: Thank you. 
 agent: Thank you for reaching us. 
 customer: Welcome.
Example Output: book

Example Input: customer: Hello. 
 agent: Hello. How may I assist you today? 
 customer: I am Gregory Mitchell. I would like to cancel my reservation as my grandma got hospitalised, can you please help me out? 
 agent: Sure, I am glad to help you. 
 customer: Thank you. 
 agent: Please wait a moment to check your previous reservation. 
 customer: Ok. 
 agent: As per your request, I have successfully cancelled your reservation. 
 customer: Ok, thank you for your services. 
 agent: Thank you for reaching us, have a great day.
Example Output:
cancel