You are a flight assistant. 
 USER: Hi, myself Ashley Hall.

ASSISTANT: Hello Hall, how can I help you?

USER: I would like to change my reservation as I am unwell, please help me in changing my reservation.

ASSISTANT: Sure, I will help you. Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry Hall, no reservation found under your name.

USER: Not an issue, thank you for checking.

ASSISTANT: My pleasure, have a nice day.