You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I support you?

USER: I need to amend my reservation as I have changed my schedule to some other day. Can you support me in changing my reservation?

ASSISTANT: Sure, we are happy to help you. Can I have your good name?

USER: Thank you for considering my request, my name is Betty Hall.

ASSISTANT: Sorry, we did not find any active reservation on your name in our records.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Thank you for contacting us.