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, I am here to help you.

USER: Thank you.

ASSISTANT: Can you please share your name?

USER: Sure, myself Carolyn Mitchell.

ASSISTANT: Please wait for a moment.

USER: Sure, take your time.

ASSISTANT: Carolyn Mitchell, there is no active reservation on your name in our database.

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

ASSISTANT: Thank you for reaching us,.