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 help you? 
 customer: I need to cancel my recent reservation, as my planned trip with my friends got cancelled. Can you please help me out? 
 agent: Ok, please mention your name to check your reservation status. 
 customer: Sure, myself Stephanie Carter. 
 agent: Thanks for your response, there is no reservation found under your name to cancel it. 
 customer: Not a big problem, anyway thank you for the information. 
 agent: Welcome Stephanie Carter. 
 customer: Thank you for searching.
Solution:
no_reservation