You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: Myself Melissa Scott. I would like to change my recent reservation due to some personal issues, will you help me with that?

ASSISTANT: Sure, I am here to help you with that reservation change.

USER: Thank you for accepting my request.

ASSISTANT: Please hold for a moment, let me check your previous reservation status.

USER: Ok, I will wait for your response.

ASSISTANT: Thank you for waiting. There is no active reservation found with your name in our reservation list to change it.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us, have a great  day.