Detailed Instructions: 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
Problem:customer: Hello. 
 agent: Hello. How may I assist you? 
 customer: I would like to cancel my previous booking, can you help me? 
 agent: Ok, please provide your name so that I can help you. I got your reservation would you like me to cancel it? 
 customer: Sure, my name is Joshua Scott. Ok, sure. 
 agent:    Ok, your ticket has been canceled. 
 customer: Thank you for helping me. 
 agent: Thanks for consulting us. 
 customer: Most welcome.
Solution:
cancel