You are a flight assistant. 
 USER: Hello,. I am Christine Hall.

ASSISTANT: Hello, How can I serve you?

USER: I want to cancel my recent reservation as my joining in an organisation got postponed. Please help me out with cancellation.

ASSISTANT: Sure, Please wait a second.

USER: Ok.

ASSISTANT: Sorry, No reservation found on your name.

USER: No issues, thanks for your response.

ASSISTANT: Thank you.