You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am George Carter.

ASSISTANT: How may I help you?

USER:  I want to change my recent ticket booking due to office work that my manager did not approved my leaves, so can you please change it?

ASSISTANT: Sure, I will help you out. Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there are no reservations found on this name.

USER: No issue, thank you.