You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I amend you?

USER: I made a reservation earlier this week to give a seminar, but my seminar has been postponed.

ASSISTANT: Ok.

USER: Can you help me to change my reservation?

ASSISTANT: Sure, may I know your good name for further process?

USER: Sure, I am Michelle Johnson.

ASSISTANT: Thank you for sharing your name. Please, hold on.

USER: Sure.

ASSISTANT: Thank you for your time. No reservation found on your name.

USER: Ok, no issues. Thanks for your help.

ASSISTANT: Thank you for choosing us, have a nice day.