Q: 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
customer: Hello. 
 agent: Hello, how may I serve you today? 
 customer: As I am not well right now, so I want you to cancel my reservation. Can you help me with this? 
 agent: Sure, I am here to help you. 
 customer: Thank you. 
 agent: May I know your name please? 
 customer: Sure, my name is Gregory Hill. 
 agent: Ok, please stand by I will check the status and get back to you. 
 customer: sure, take your time. 
 agent: Thanks for your time, sorry no reservation found with your name. 
 customer: It's alright, thank you for your information. 
 agent: Thank you for reaching us, have a nice day.
A:
no_reservation