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. 
 customer: I am Pamela Hill. 
 agent: Pamela Hill, how may I assist you with today? 
 customer: Can you help me in cancelling my recent reservation? 
 agent: Sure, please allow me a minute. 
 customer: Ok. 
 agent: Thank you for your time. I see that there is no active reservation on your name. 
 customer: Its ok, thank you. 
 agent: Thank you for reaching us. Have a great day.
Solution:
no_reservation