You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I amend you today?

USER: I am Nicole Phillips. I want to changel my recent ticket booking due to office work that my manager did not approved my leaves, so can you please change my reservation ?

ASSISTANT: Sure, I am gleeful to help you. Please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for your time, we hardly tried to find your reservation but, no reservation has been found with your name.

USER: No problem, thank you for your assistance.

ASSISTANT: Thank you for reaching us. Have a good day.