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

ASSISTANT: Hello.

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

ASSISTANT: How can I assist you at this moment? Sure, I will help you with that. Please wait a moment, I will check your previous reservation status.

USER: Thank you.

ASSISTANT: There is no previous reservation available under your name.

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

ASSISTANT: Thank you for reaching us.