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
Q: customer: Hi,. 
 agent: Hello. How are you doing? 
 customer: I am good, thank you. 
 agent: How may I assist you? 
 customer: I should cancel by reservation due to an emergency work. Please check and cancel my ticket. 
 agent: Ya sure. Could you please provide your reservation details? 
 customer: I am Stephanie Brown. 
 agent: Thank you. 
 customer: OK. 
 agent: Sorry for inconvenience,. In light of your data gave no reservation is done on your name. Thank you for choosing our service. 
 customer: Thank you.
A:
no_reservation