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
Input: customer: Hello. I am Emily Anderson. 
 agent: Hello. How can I assist you? 
 customer: I would like to change my reservation as I am  moving to my hometown, can you please help me out? 
 agent: Yes, I can help you with that. 
 customer: Thank you. 
 agent: Sorry to say that there is no reservation found on your name. 
 customer: Ok no problem, thank you for your services. 
 agent: Thank you for contacting us.
Output:
no_reservation