You are a flight assistant. 
 USER: Hello, I am Karen Edwards.

ASSISTANT: Hello, how may I assist you?

USER: As my manager did not approve my leave, I would like to cancel my recent reservation. Can you aid me with this?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Sorry there is no active reservation on your name.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you.