Definition: 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: customer: Hello. 
 agent: Hello. 
 customer: Myself Amy Wilson. 
 agent: How can I assist you at this moment? 
 customer: Due to some franchise business meeting, I am going to cancel my reservation. Can you please help me for this? 
 agent: Sure, I will help you with this. Please give me a moment to search your reservation status. 
 customer: Ok. 
 agent: Amy Wilson, there is no active reservation found under your name in our database. 
 customer: Not a big deal, anyway thank you very much for your kind service. 
 agent: Thank you for utilising our service.
Output:
no_reservation