You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help 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, let me know your name to check your reservation details.

USER: Myself Sharon Wilson.

ASSISTANT: Thank you. Please wait for a while, let me check your reservation status.

USER: Sure, take your time.

ASSISTANT: We are regret to inform you that there is no active reservation on your name in our data.

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

ASSISTANT: Thank you for reaching us.

USER: Welcome.