You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

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

ASSISTANT: Sure, may I know your name?

USER: Myself Anthony Davis.

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

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

ASSISTANT: Thank you so much for choosing us.