You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you?

USER: My visa has been postponed. For this I want to change my reservation with the name of Elizabeth Wight.

ASSISTANT: Sure, Plesae wait for a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no reservation found on  your name.

USER: No, problem. Thank you for aiding me.

ASSISTANT: Thank you for reaching us.