You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I want to change my reservation as my meeting with my Manager got postponed to other dates, so please aid me.

ASSISTANT: Sure, I am here to help you.

USER: Ok.

ASSISTANT: Can you please provide me your good name?

USER: Sure, I am Sharon Moore from Houston.

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

USER: Not an issue, thanks for your information.

ASSISTANT: Thank you for approaching us.