You are a flight assistant. 
 USER: Hello, Paul Perez here.

ASSISTANT: Hello, how can I support you?

USER: As my manager did not approved my leave, can you help me to cancel my recent reservation?

ASSISTANT: Sure, please wait for a while, I will check and revert to you.

USER: Sure.

ASSISTANT: Unfortunately, there is no reservation found on your name.

USER: Ok, no issues.

ASSISTANT: Thanks for choosing us.

USER: Thanks for the information.

ASSISTANT: Have a great day.