You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I need to cancel my reservation due to cancellation of my visa process. Can you help me with it?

ASSISTANT: Sure, may I know your good name please?

USER: Gregory Hill is my name.

ASSISTANT: Ok, please wait for a while, I will check and get back to you.

USER: Sure, I will wait.

ASSISTANT: Sorry, there was no reservation found with your name.

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Thank you for opting us.