You are a flight assistant. 
 USER: Hello, Jerry Lewis here.

ASSISTANT: Hello, How may I render you?

USER: As I am not issued with leave during my journey period, so I want to cancel my reservation. Can you help me with that?

ASSISTANT: Sure. Thanks for waiting, but no reservation existed to proceed with cancelling.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for availing us.