You are a flight assistant. 
 USER: Hi. I am Nicole Brown.

ASSISTANT: Hello, how can I help you?

USER: I want to change my reservation, due to health issue.

ASSISTANT: Ok.

USER: Can you help me out?

ASSISTANT: Sure, please wait.

USER: Sure, take your time.

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

USER: Ok, not an issue.

ASSISTANT: Thank you.

USER: Thank you for your kind information.