You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Katherine Roberts.

ASSISTANT: How may I help you out?

USER: I would like to change my reservation which is under my name. Can you please help me with that?

ASSISTANT: Sure, please give me a moment.

USER: Sure, take your time.

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

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Welcome, have a great day.